Four Sizes. One Ultralight Flask. Built for Every Pace.The Portable Folding Soft Water Bottle is the go-to hydration flask for runners, hikers, cyclists, and climbers who need lightweight, packable water access without the bulk of a rigid bottle. Made from BPA- TPU with a leak-proof sealing edge, it collapses flat when empty and expands to full capacity on demand.Available in 250ml, 300ml, 380ml, and 500ml sizes, there's a option for every activity duration and pack setup. The soft bite mouthpiece with dust cover delivers water on the move, while the wide temperature range of -20°C to 50°C makes it reliable in cold and warm conditions alike.Specifications Feature Details Capacity Options 250ml / 300ml / 380ml / 500ml Material BPA- TPU Weight Approx. 27.7–33g Temperature Range -20°C to 50°C Closure Soft bite mouthpiece with dust cover Sealing Leak-proof sealing edge Design Foldable / collapsible Why Choose This Soft Flask? Four Size Options: 250ml, 300ml, 380ml, and 500ml to match your activity and duration. BPA- TPU: Safe, taste-neutral material for clean-tasting water all day. Leak-Proof Sealing Edge: Secure seal prevents spills during transport and use. Wide Temperature Range: Performs from -20°C to 50°C — reliable in cold and warm conditions. Ultralight at ~30g: Barely noticeable in your pack, vest, or waist bag. I For Trail runners and marathon athletes using hydration vests Hikers and backpackers minimising pack weight Cyclists needing a compact water source Climbers and mountaineers on technical routes In the Box1 × Folding Soft Water Bottle (250ml, 300ml, 380ml, or 500ml)