{"id":9971480002867,"title":"Nathan SaferRun Ripcord Siren Personal Alarm","handle":"nathan-saferrun-ripcord-siren-personal-alarm","description":"\u003cp\u003eWhen safety matters on your run or walk, the Nathan SaferRun Ripcord Siren Personal Alarm brings simple, powerful protection. Clip it to your gear, and with a single pull tab you unleash a loud alarm that alerts others and helps you feel secure. Grivet Outdoors recommends this compact device for anyone who wants an easy-to-carry safety tool designed for real motion and real peace of mind.\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-weight: 700;\"\u003eFeatures:\u003c\/span\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cp\u003eQuick-pull tab enables one-handed activation in an emergency\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e120 dB alarm output — comparable to an ambulance siren — alerting others around you\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eAudible from over 600 feet (approx.) to draw attention when needed\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eBuilt-in clip allows attachment to belt, backpack, or running gear\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eReusable design so you can test and use before you need it\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eCompact and lightweight — made for carrying on the move\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eIdeal for runners, walkers, commuters who want audible safety\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","published_at":"2025-11-17T09:40:10-06:00","created_at":"2025-11-14T10:54:58-06:00","vendor":"Nathan","type":"Running \u0026 Fitness","tags":[],"price":2000,"price_min":2000,"price_max":2000,"available":true,"price_varies":false,"compare_at_price":2000,"compare_at_price_min":2000,"compare_at_price_max":2000,"compare_at_price_varies":false,"variants":[{"id":52697650037043,"title":"Red","option1":"Red","option2":null,"option3":null,"sku":"717064930890","requires_shipping":true,"taxable":false,"featured_image":{"id":52417911882035,"product_id":9971480002867,"position":1,"created_at":"2025-11-14T10:55:11-06:00","updated_at":"2025-11-14T10:55:12-06:00","alt":"Nathan SaferRun Ripcord Siren Personal Alarm","width":2000,"height":2000,"src":"\/\/www.grivetoutdoors.com\/cdn\/shop\/files\/2143883.jpg?v=1763139312","variant_ids":[52697650037043]},"available":true,"name":"Nathan SaferRun Ripcord Siren Personal Alarm - Red","public_title":"Red","options":["Red"],"price":2000,"weight":0,"compare_at_price":2000,"inventory_quantity":50,"inventory_management":"shopify","inventory_policy":"deny","barcode":"717064930890","featured_media":{"alt":"Nathan SaferRun Ripcord Siren Personal Alarm","id":42660581474611,"position":1,"preview_image":{"aspect_ratio":1.0,"height":2000,"width":2000,"src":"\/\/www.grivetoutdoors.com\/cdn\/shop\/files\/2143883.jpg?v=1763139312"}},"requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/www.grivetoutdoors.com\/cdn\/shop\/files\/2143883.jpg?v=1763139312","\/\/www.grivetoutdoors.com\/cdn\/shop\/files\/2143884.jpg?v=1763139312","\/\/www.grivetoutdoors.com\/cdn\/shop\/files\/2143885.jpg?v=1763139312"],"featured_image":"\/\/www.grivetoutdoors.com\/cdn\/shop\/files\/2143883.jpg?v=1763139312","options":["Color"],"media":[{"alt":"Nathan SaferRun Ripcord Siren Personal Alarm","id":42660581474611,"position":1,"preview_image":{"aspect_ratio":1.0,"height":2000,"width":2000,"src":"\/\/www.grivetoutdoors.com\/cdn\/shop\/files\/2143883.jpg?v=1763139312"},"aspect_ratio":1.0,"height":2000,"media_type":"image","src":"\/\/www.grivetoutdoors.com\/cdn\/shop\/files\/2143883.jpg?v=1763139312","width":2000},{"alt":"Nathan SaferRun Ripcord Siren Personal Alarm","id":42660581507379,"position":2,"preview_image":{"aspect_ratio":1.0,"height":2000,"width":2000,"src":"\/\/www.grivetoutdoors.com\/cdn\/shop\/files\/2143884.jpg?v=1763139312"},"aspect_ratio":1.0,"height":2000,"media_type":"image","src":"\/\/www.grivetoutdoors.com\/cdn\/shop\/files\/2143884.jpg?v=1763139312","width":2000},{"alt":"Nathan SaferRun Ripcord Siren Personal Alarm","id":42660581540147,"position":3,"preview_image":{"aspect_ratio":1.0,"height":2000,"width":2000,"src":"\/\/www.grivetoutdoors.com\/cdn\/shop\/files\/2143885.jpg?v=1763139312"},"aspect_ratio":1.0,"height":2000,"media_type":"image","src":"\/\/www.grivetoutdoors.com\/cdn\/shop\/files\/2143885.jpg?v=1763139312","width":2000}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cp\u003eWhen safety matters on your run or walk, the Nathan SaferRun Ripcord Siren Personal Alarm brings simple, powerful protection. Clip it to your gear, and with a single pull tab you unleash a loud alarm that alerts others and helps you feel secure. Grivet Outdoors recommends this compact device for anyone who wants an easy-to-carry safety tool designed for real motion and real peace of mind.\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-weight: 700;\"\u003eFeatures:\u003c\/span\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cp\u003eQuick-pull tab enables one-handed activation in an emergency\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e120 dB alarm output — comparable to an ambulance siren — alerting others around you\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eAudible from over 600 feet (approx.) to draw attention when needed\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eBuilt-in clip allows attachment to belt, backpack, or running gear\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eReusable design so you can test and use before you need it\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eCompact and lightweight — made for carrying on the move\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eIdeal for runners, walkers, commuters who want audible safety\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e"}
Nathan SaferRun Ripcord Siren Personal Alarm
$20.00
More from Nathan
When safety matters on your run or walk, the Nathan SaferRun Ripcord Siren Personal Alarm brings simple, powerful protection. Clip it to your gear, and with a single pull tab you unleash a loud alarm that alerts others and helps you feel secure. Grivet Outdoors recommends this compact device for anyone who wants an easy-to-carry safety tool designed for real motion and real peace of mind.
Features:
Quick-pull tab enables one-handed activation in an emergency
120 dB alarm output — comparable to an ambulance siren — alerting others around you
Audible from over 600 feet (approx.) to draw attention when needed
Built-in clip allows attachment to belt, backpack, or running gear
Reusable design so you can test and use before you need it
Compact and lightweight — made for carrying on the move
Ideal for runners, walkers, commuters who want audible safety
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, loss 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 loose? Unfortunately, this is not a simple question. Shoes should not be too tight or too loose. 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.
