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{"id":6547272138854,"title":"Ultraspire Lumen 300 Sidekick Headlamp - Running and Hiking Compact and Lightweight Headlamp w\/300 Lumens and USB Rechargeable Battery","handle":"ultraspire-lumen-300-sidekick-headlamp-running-and-hiking-compact-and-lightweight-headlamp-w-300-lumens-and-usb-rechargeable-battery","description":"Weight\u003cbr\u003e\u003cbr\u003e2.6 oz (74 g)\u003cbr\u003e\u003cbr\u003e2.9 oz (82 g)\u003cbr\u003e\u003cbr\u003e7.1 oz (201 g)\u003cbr\u003e\u003cbr\u003e7 oz (198 g) with pocket\u003cbr\u003e\u003cbr\u003e5.3 oz (153 g)\u003cbr\u003e\u003cbr\u003e5.8 oz (164 g)\u003cbr\u003e\u003cbr\u003eSize range\u003cbr\u003e\u003cbr\u003e21” - 24.5”\u003cbr\u003e\u003cbr\u003e22” - 42”\u003cbr\u003e\u003cbr\u003e26” - 44”\u003cbr\u003e\u003cbr\u003e26” - 38”\u003cbr\u003e\u003cbr\u003e21” - 24.5”\u003cbr\u003e\u003cbr\u003e26” - 38”\u003cbr\u003e\u003cbr\u003eCapacity\u003cbr\u003e\u003cbr\u003e61 c.i. (1 L)\u003cbr\u003e\u003cbr\u003e61 c.i. (1 L)\u003cbr\u003e\u003cbr\u003eLumen Output\u003cbr\u003e\u003cbr\u003e300, 105, and 62\u003cbr\u003e\u003cbr\u003e200\u003cbr\u003e\u003cbr\u003e400\u003cbr\u003e\u003cbr\u003e600\u003cbr\u003e\u003cbr\u003e200,400, and 650\u003cbr\u003e\u003cbr\u003e800\u003cbr\u003e\u003cbr\u003eWater Resistance\u003cbr\u003e\u003cbr\u003eIPX4 waterproof rating\u003cbr\u003e\u003cbr\u003eIPX4 waterproof rating\u003cbr\u003e\u003cbr\u003eIPX7\u003cbr\u003e\u003cbr\u003eIPX8 waterproof rating\u003cbr\u003e\u003cbr\u003eIPX7 Waterproof rating\u003cbr\u003e\u003cbr\u003eBattery \/ Burn Time\u003cbr\u003e\u003cbr\u003e4-13 hours. Rechargeable Battery (cable included)\u003cbr\u003e\u003cbr\u003eWhite Light- 5-20 hour burn time, Red Light- 10 hour burn time. Coin cell 2032 watch battery included\u003cbr\u003e\u003cbr\u003eWhite Light: 5-20 hour burn time, Red Light: 10 hour burn time. Micro USB charging port (charging cable included)\u003cbr\u003e\u003cbr\u003e18650 3.7V (rechargable)\u003cbr\u003e\u003cbr\u003eNot included \/ Spot: 3-12 hour burn time, Flood: 5-10 hour burn time, Red: 8-12 hour burn time\u003cbr\u003e\u003cbr\u003e18650 3.7V (rechargable) \/ 4-8 hour burn time\u003cbr\u003e\u003cbr\u003eTechnology\u003cbr\u003e\u003cbr\u003eLow Weight, Fatigue Free, PerfectAngle, Steadybeam\u003cbr\u003e\u003cbr\u003eStable Ride - Low Weight - Fatigue Free - Perfect Angle\u003cbr\u003e\u003cbr\u003eSteady Beam - Low Weight - Fatigue Free - Perfect Angle - Stable Ride - Autocool - Widebeam - Enduralight\u003cbr\u003e\u003cbr\u003eWideBeam - Race Fit - Low Weight - Steady Beam - Stable Ride - Fatigue Free - Autocool - EnduraLight - Perfect Angle\u003cbr\u003e\u003cbr\u003eLow Weight - Fatigue Free - Enduralight - PerfectAngle\u003cbr\u003e\u003cbr\u003eRace Fit, Low Weight, Steady Beam, Stable Ride, Fatigue Free, AutoCool, Widebeam, EnduraLight, PerfectAngle\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eULTRASPIRE 3D LIGHTING - It creates visible shadows, giving you a better sense of depth and a clearer understanding of 3D space.\u003c\/li\u003e\n\u003cli\u003eLOW WEIGHT - Lightweight components and materials create an almost unnoticeable on-the-body feel without compromising durability.\u003c\/li\u003e\n\u003cli\u003eFATIGUE FREE - Intuitive settings, large buttons, and quick release buckles. Easy operation for fatigued minds in extreme circumstances.\u003c\/li\u003e\n\u003cli\u003ePERFECTANGLE - Easily adjust up, straight, or down to suit your terrain. Illuminate your path while keeping your head and body in a natural running position.\u003c\/li\u003e\n\u003cli\u003eSTEADYBEAM - Prevents eye fatigue by maintaining a steady lumen output that does not dim until the battery is very low.\u003c\/li\u003e\n\u003c\/ul\u003e","published_at":"2021-10-04T02:01:21-05:00","created_at":"2021-03-18T16:32:36-05:00","vendor":"Ultraspire","type":"Running \u0026 Fitness","tags":["25-50","athletic","size-default-title","trail-hiking","ultraspire"],"price":3995,"price_min":3995,"price_max":3995,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":39269865226342,"title":"Default Title \/ Default Title","option1":"Default Title","option2":"Default Title","option3":null,"sku":"GRV246898","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Ultraspire Lumen 300 Sidekick Headlamp - Running and Hiking Compact and Lightweight Headlamp w\/300 Lumens and USB Rechargeable Battery - 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44”\u003cbr\u003e\u003cbr\u003e26” - 38”\u003cbr\u003e\u003cbr\u003e21” - 24.5”\u003cbr\u003e\u003cbr\u003e26” - 38”\u003cbr\u003e\u003cbr\u003eCapacity\u003cbr\u003e\u003cbr\u003e61 c.i. (1 L)\u003cbr\u003e\u003cbr\u003e61 c.i. (1 L)\u003cbr\u003e\u003cbr\u003eLumen Output\u003cbr\u003e\u003cbr\u003e300, 105, and 62\u003cbr\u003e\u003cbr\u003e200\u003cbr\u003e\u003cbr\u003e400\u003cbr\u003e\u003cbr\u003e600\u003cbr\u003e\u003cbr\u003e200,400, and 650\u003cbr\u003e\u003cbr\u003e800\u003cbr\u003e\u003cbr\u003eWater Resistance\u003cbr\u003e\u003cbr\u003eIPX4 waterproof rating\u003cbr\u003e\u003cbr\u003eIPX4 waterproof rating\u003cbr\u003e\u003cbr\u003eIPX7\u003cbr\u003e\u003cbr\u003eIPX8 waterproof rating\u003cbr\u003e\u003cbr\u003eIPX7 Waterproof rating\u003cbr\u003e\u003cbr\u003eBattery \/ Burn Time\u003cbr\u003e\u003cbr\u003e4-13 hours. Rechargeable Battery (cable included)\u003cbr\u003e\u003cbr\u003eWhite Light- 5-20 hour burn time, Red Light- 10 hour burn time. Coin cell 2032 watch battery included\u003cbr\u003e\u003cbr\u003eWhite Light: 5-20 hour burn time, Red Light: 10 hour burn time. Micro USB charging port (charging cable included)\u003cbr\u003e\u003cbr\u003e18650 3.7V (rechargable)\u003cbr\u003e\u003cbr\u003eNot included \/ Spot: 3-12 hour burn time, Flood: 5-10 hour burn time, Red: 8-12 hour burn time\u003cbr\u003e\u003cbr\u003e18650 3.7V (rechargable) \/ 4-8 hour burn time\u003cbr\u003e\u003cbr\u003eTechnology\u003cbr\u003e\u003cbr\u003eLow Weight, Fatigue Free, PerfectAngle, Steadybeam\u003cbr\u003e\u003cbr\u003eStable Ride - Low Weight - Fatigue Free - Perfect Angle\u003cbr\u003e\u003cbr\u003eSteady Beam - Low Weight - Fatigue Free - Perfect Angle - Stable Ride - Autocool - Widebeam - Enduralight\u003cbr\u003e\u003cbr\u003eWideBeam - Race Fit - Low Weight - Steady Beam - Stable Ride - Fatigue Free - Autocool - EnduraLight - Perfect Angle\u003cbr\u003e\u003cbr\u003eLow Weight - Fatigue Free - Enduralight - PerfectAngle\u003cbr\u003e\u003cbr\u003eRace Fit, Low Weight, Steady Beam, Stable Ride, Fatigue Free, AutoCool, Widebeam, EnduraLight, PerfectAngle\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eULTRASPIRE 3D LIGHTING - It creates visible shadows, giving you a better sense of depth and a clearer understanding of 3D space.\u003c\/li\u003e\n\u003cli\u003eLOW WEIGHT - Lightweight components and materials create an almost unnoticeable on-the-body feel without compromising durability.\u003c\/li\u003e\n\u003cli\u003eFATIGUE FREE - Intuitive settings, large buttons, and quick release buckles. Easy operation for fatigued minds in extreme circumstances.\u003c\/li\u003e\n\u003cli\u003ePERFECTANGLE - Easily adjust up, straight, or down to suit your terrain. Illuminate your path while keeping your head and body in a natural running position.\u003c\/li\u003e\n\u003cli\u003eSTEADYBEAM - Prevents eye fatigue by maintaining a steady lumen output that does not dim until the battery is very low.\u003c\/li\u003e\n\u003c\/ul\u003e"}

Ultraspire Lumen 300 Sidekick Headlamp - Running and Hiking Compact and Lightweight Headlamp w/300 Lumens and USB Rechargeable Battery

$39.95
Ultraspire

Ultraspire Lumen 300 Sidekick Headlamp - Running and Hiking Compact and Lightweight Headlamp w/300 Lumens and USB Rechargeable Battery

$39.95

Grivet Members get back an estimated $4 on this item as part of their member rewards.

Maximum quantity available reached.

More from Ultraspire

Weight

2.6 oz (74 g)

2.9 oz (82 g)

7.1 oz (201 g)

7 oz (198 g) with pocket

5.3 oz (153 g)

5.8 oz (164 g)

Size range

21” - 24.5”

22” - 42”

26” - 44”

26” - 38”

21” - 24.5”

26” - 38”

Capacity

61 c.i. (1 L)

61 c.i. (1 L)

Lumen Output

300, 105, and 62

200

400

600

200,400, and 650

800

Water Resistance

IPX4 waterproof rating

IPX4 waterproof rating

IPX7

IPX8 waterproof rating

IPX7 Waterproof rating

Battery / Burn Time

4-13 hours. Rechargeable Battery (cable included)

White Light- 5-20 hour burn time, Red Light- 10 hour burn time. Coin cell 2032 watch battery included

White Light: 5-20 hour burn time, Red Light: 10 hour burn time. Micro USB charging port (charging cable included)

18650 3.7V (rechargable)

Not included / Spot: 3-12 hour burn time, Flood: 5-10 hour burn time, Red: 8-12 hour burn time

18650 3.7V (rechargable) / 4-8 hour burn time

Technology

Low Weight, Fatigue Free, PerfectAngle, Steadybeam

Stable Ride - Low Weight - Fatigue Free - Perfect Angle

Steady Beam - Low Weight - Fatigue Free - Perfect Angle - Stable Ride - Autocool - Widebeam - Enduralight

WideBeam - Race Fit - Low Weight - Steady Beam - Stable Ride - Fatigue Free - Autocool - EnduraLight - Perfect Angle

Low Weight - Fatigue Free - Enduralight - PerfectAngle

Race Fit, Low Weight, Steady Beam, Stable Ride, Fatigue Free, AutoCool, Widebeam, EnduraLight, PerfectAngle
  • ULTRASPIRE 3D LIGHTING - It creates visible shadows, giving you a better sense of depth and a clearer understanding of 3D space.
  • LOW WEIGHT - Lightweight components and materials create an almost unnoticeable on-the-body feel without compromising durability.
  • FATIGUE FREE - Intuitive settings, large buttons, and quick release buckles. Easy operation for fatigued minds in extreme circumstances.
  • PERFECTANGLE - Easily adjust up, straight, or down to suit your terrain. Illuminate your path while keeping your head and body in a natural running position.
  • STEADYBEAM - Prevents eye fatigue by maintaining a steady lumen output that does not dim until the battery is very low.

How To Measure Your Shoe Size

Here are the best shoe size conversion charts - in US, UK, European, and inches, for men's, kid's and women's shoes. 
 
If you've ever wondered "What size shoe is a 38?" (It is a men's size 7.5 in the US) or "What is a size 40 in shoes?" (that'd be a US men's size 9.5), read on to learn how to measure shoe sizes in different countries.
 
How do you measure shoe size? It is possible to measure your own foot using a ruler or a Brannock device, but since our feet our three dimensional, this will only approximate your measurements. After you've measured your foot, try using our conversion charts below to see what your size is. Be mindful that different brands, like Altra running shoes vs. Brooks running shoes vs. Oboz hiking boots, maybe run slightly different in sizes. 
 
Women's Shoe Size Conversions
US Sizes Euro Sizes UK Sizes Inches CM
4 35 2 8.1875" 20.8
4.5 35 2.5 8.375" 21.3
5 35-36 3 8.5" 21.6
5.5 36 3.5 8.75" 22.2
6 36-37 4 8.875" 22.5
6.5 37 4.5 9.0625" 23
7 37-38 5 9.25" 23.5
7.5 38 5.5 9.375" 23.8
8 38-39 6 9.5" 24.1
8.5 39 6.5 9.6875" 24.6
9 39-40 7 9.875" 25.1
9.5 40 7.5 10" 25.4
10 40-41 8 10.1875" 25.9
10.5 41 8.5 10.3125" 26.2
11 41-42 9 10.5" 26.7
11.5 42 9.5 10.6875" 27.1
12 42-43 10 10.875" 27.6

Men's Shoe Size Conversions

US Sizes Euro Sizes UK Sizes Inches CM
6 39 5.5 9.25" 23.5
6.5 39 6 9.5" 24.1
7 40 6.5 9.625" 24.4
7.5 40-41 7 9.75" 24.8
8 41 7.5 9.9375" 25.4
8.5 41-42 8 10.125" 25.7
9 42 8.5 10.25" 26
9.5 42-43 9 10.4375" 26.7
10 43 9.5 10.5625" 27
10.5 43-44 10 10.75" 27.3
11 44 10.5 10.9375" 27.9
11.5 44-45 11 11.125" 28.3
12 45 11.5 11.25" 28.6
13 46 12.5 11.5625" 29.4
14 47 13.5 11.875" 30.2
15 48 14.5 12.1875" 31
16 49 15.5 12.5" 31.8
Big Kid Shoe Size Conversions (7 – 12 years)
US Sizes Euro Sizes UK Sizes Inches CM
3.5 35 2.5 8.625" 21.9
4 36 3 8.75" 22.2
4.5 36 3.5 9" 22.9
5 37 4 9.125" 23.2
5.5 37 4.5 9.25" 23.5
6 38 5 9.5" 24.1
6.5 38 5.5 9.625" 24.4
7 39 6 9.75" 24.8
Little Kid Shoe Size Conversions (4 – 7 years)
US Sizes Euro Sizes UK Sizes Inches CM
10.5 27 9.5 6.625" 16.8
11 28 10 6.75" 17.1
11.5 29 10.5 7" 17.8
12 30 11 7.125" 18.1
12.5 30 11.5 7.25" 18.4
13 31 12 7.5" 19.1
13.5 31 12.5 7.625" 19.4
1 32 13 7.75" 19.7
1.5 33 14 8" 20.3
2 33 1 8.125" 20.6
2.5 34 1.5 8.25" 21
3 34 2 8.5" 21.6

FAQ & Tips

  • What if I am between shoe sizes? We recommend you should size up, especially in active & sports shoes. This includes running shoes and hiking boots. 
  • Does 0.5 size make a difference in shoes? Yes, it certainly does! Wearing shoes that are too small can cause pain and injuries. Blisters, lose of toenails and bunions can all result from wearing shoes that are even 0.5 size too small. These are common ailments of beginner runners. 
  • Is one foot bigger than the other? It is common for people to have one foot that is slightly bigger than the other. Our tip is that you should buy shoes that fit the larger foot (buy pairs of shoes in the larger size of the two). 
  • Should shoes be tight or lose? Unfortunately, this is not a simple question. Shoes should not be too tight or too lose. You should be able to put a thumbs width at the end of your toe box, between your big toe and the pointy end of the shoe. You should also be able to snuggly fit your index finger between your heel and the back of the shoe. If you have not much (or not enough!) space in either of these areas, try a different size shoe. 
  • When should I try on shoes? A great tip for runners is to try on running shoes at the end of a work day. As you run, just like when you are on your feet for work, your feet swell. You will want to try on running shoes when your feet are at their largest. This allows them to still fit comfortably after a long distance run. 
  • What size shoe should I buy? This shoe chart is not a guarantee your shoes will fit. If you are in the area of Memphis, Tennessee, run on in to one of our running specialty & gear stores and our experienced fit experts will help you out!

Image below: A Brannock device is one tool run specialists use to measure shoe size. It can measure not only foot length, but also foot width. 

How to measure shoe size - Brannock Device

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