{"product_id":"nathan-18oz-insulated-soft-flask-with-exospine","title":"Nathan 18oz Insulated Soft Flask with ExoSpine","description":"Built for runners and endurance athletes who need cold fluids on long efforts, this is our pick for hot-weather hydration. Double-wall insulation keeps drinks cold twice as long as standard flasks, while the rigid ExoSpine holds its shape as the fluid level drops — no collapse, no awkward sloshing.\n\u003cul\u003e\n\u003cli\u003eDouble-wall insulation keeps liquids cold up to twice as long as uninsulated flasks and eliminates exterior condensation sweat on your hands or gear\u003c\/li\u003e\n\u003cli\u003eRigid ExoSpine™ internal structure maintains the flask's shape as it empties — no collapsing, no fumbling mid-run\u003c\/li\u003e\n\u003cli\u003eHigh-flow silicone bite valve delivers a fast, clean pull and self-seals after every sip to prevent drips in your vest pocket\u003c\/li\u003e\n\u003cli\u003eSlim, flexible TPU body compresses as you drink to reduce liquid movement and fits standard running vest pockets, waist belts, and handheld sleeves\u003c\/li\u003e\n\u003cli\u003eWide-mouth opening fits ice cubes and makes filling and cleaning straightforward — 100% BPA-free, PVC-free, and taste-free\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Nathan","offers":[{"title":"Clear \/ OS","offer_id":54050233778483,"sku":"717064926718","price":38.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1289\/1975\/files\/nathan-18oz-insulated-soft-flask-with-exospine-clear-lateral.jpg?v=1789426850","url":"https:\/\/www.grivetoutdoors.com\/products\/nathan-18oz-insulated-soft-flask-with-exospine","provider":"Grivet Outdoors","version":"1.0","type":"link"}