TPU Collapsible Water Bottle – Foldable Soft Flask for Hiking

Stay hydrated on every adventure with this TPU Collapsible Soft Flask — a lightweight, foldable water bottle designed for hikers, runners, campers, and everyday explorers. When empty, it collapses flat to slip effortlessly into any backpack, hip belt, or pocket, then expands to hold up to 700ml of your favorite drink when you need it most.

Crafted from food-grade TPU (Thermoplastic Polyurethane), this flask is BPA-free, eco-friendly, and completely harmless to the human body. The soft, flexible walls are durable enough to withstand the rigors of the trail yet gentle to the touch — no hard plastic edges, no bulk. Choose from 4 vibrant color options to match your gear and personality.

Key Features

• Collapsible & Compact: Folds flat when empty — takes up virtually zero space in your pack
• Food-Grade TPU Material: BPA-free, eco-friendly, safe for everyday use
• Generous Capacity: Holds 601ml–700ml — plenty for hikes, runs, and outdoor workouts
• Featherlight: Ultralight construction means you'll barely notice it's there
• Versatile Use: Perfect for hiking, trail running, cycling, camping, gym sessions, and travel
• Easy to Clean: Wide opening allows thorough rinsing and drying
• 4 Color Options: Pick the shade that suits your style

Why Choose a Collapsible Flask?

Traditional rigid water bottles waste space in your bag whether full or empty. This collapsible soft flask solves that problem — carry it full at the start of your adventure and fold it away to almost nothing once you've drunk up. It's the smart hydration solution for any activity where every gram and every inch of pack space counts.

For more information on healthy hydration during outdoor activities, visit the CDC's guidance on fluid intake during physical activity.

Product Specifications

• Material: Food-Grade TPU
• Capacity: 601ml – 700ml
• Colors Available: 4 options
• Best For: Hiking, running, camping, cycling, travel

Frequently Asked Questions

Q: What is the TPU Collapsible Soft Flask made of, and is it safe to drink from?

A: The flask is made from food-grade TPU (Thermoplastic Polyurethane), which is BPA-free and eco-friendly. It is completely safe for everyday drinking use and harmless to the human body — a great sustainable alternative to single-use plastic bottles.

Q: How much liquid does the collapsible water bottle hold?

A: This collapsible soft flask holds between 601ml and 700ml — enough to keep you well-hydrated on hikes, runs, bike rides, and other outdoor activities.

Q: How compact does it get when folded?

A: When empty, the soft TPU walls collapse flat, making the bottle incredibly slim and lightweight. It fits easily into a backpack side pocket, a running vest, or even a jacket pocket — ideal for minimalist adventurers who want maximum convenience.

Q: How do I clean the collapsible flask?

A: The wide-mouth opening makes rinsing and cleaning straightforward. Simply open the cap, rinse with warm soapy water, and allow it to air dry fully before folding for storage. It is not recommended for dishwasher use — hand washing keeps the TPU material in top condition.