This soft flask provides big-time insulation for a big-time thirst.
- Insulated properties keep fluids cooler 38% longer than non-insulated soft flasks
- Bite valve keeps liquid from escaping
- Works great with all Nathan hydration vests
- Capacity: 18 oz/535 mL
![First Watch AC-1100 Flotation Coat - Red/Black - 3XL [AC-1100-RB-3XL]](https://www.voguevosto.shop/image/first-watch-ac-1100-flotation-coat-redblack-3xl-ac-1100-rb-3xl_2d1BuW_275x.webp "First Watch AC-1100 Flotation Coat - Red/Black - 3XL [AC-1100-RB-3XL]")
