Compatible with Various Filter Straw - This collapsible water bottle can easily fill lakes, rivers, ponds, snow water, stream, and municipal water sources. It can be used with Membrane Solutions water filter straws and most water filter straws with 28mm screw caps as a squeezable water filtration system.

High-Quality Material - This flexible water bottle is reusable and impact-resistant, can withstand accidental drops, and is perfect for all outdoor activities and sports use. In order to have a longer lifespan for the water bottle, we recommend that fill it with liquids from 32℉(0℃)to 140℉(60℃).

Collapsible & Lightweight - The 23oz (680ml) soft water bottle is collapsible, the volume of the water bottle is reduced by 50% when folded, leaving only 5.3 inches (height). And weighs less than 1oz, is portable enough to be stored in your pocket, backpack, or gym bag to stay hydrated anytime, anywhere.

Portable & Leak-Proof - The unique push-pull design of our flexible water bottle is perfect for reducing spillages and water accidents. Each bottle includes a carabiner, so you can attach it to bags, backpacks for quick access. And it can also be used to secure the collapsible water bottle.

Self-Standing Base & Measurement Scale - Stands upright when full and has measurements on the side to see how much water is in the bottle. Especially convenient for people who love outdoor sports, hiking, camping, fishing, cycling, travel, fitness, hunting and so much more. Also perfect as a water bag for emergency.