Product Overview

The Membrane Solutions Collapsible Water Bottle 23oz is a smart, space-saving hydration solution built for people on the move. Whether you’re heading out for a long hike, packing light for a weekend trip, or just need a reliable water source during your daily routine, this foldable pouch bottle delivers convenience without compromising performance. Made from BPA-free materials and engineered with a leakproof seal, it keeps your water clean and secure in any situation. The included durable carabiner clip lets you attach it directly to backpacks, belts, or gear loops, so you always have access when you need it—without taking up extra room in your bag. Ideal for travelers, outdoor adventurers, fitness enthusiasts, and anyone who values practicality and portability.

Key Features

• Collapsible Design: When not in use, the bottle collapses flat, reducing its profile from about 4.5 inches thick to just 1.5 inches. This makes it easy to store in small compartments, gym bags, travel pouches, or even pockets, freeing up valuable space wherever you go.
• BPA-Free Material: Constructed from safe, food-grade plastic that doesn’t leach harmful chemicals into your drinking water. You can trust this bottle to keep your hydration healthy and chemical-free.
• Leakproof Seal: Engineered with precision gaskets and a secure screw-top cap, this bottle resists spills even when tossed into a backpack or carried at an angle. No more worrying about wet clothes or soaked gear.
• Carabiner Clip Included: Comes equipped with a sturdy metal carabiner featuring a swivel-lock mechanism. Attach it to backpacks, duffel straps, or belt loops for hands-free access and added convenience during active pursuits.
• Compatible with Filter Straws: Designed to work seamlessly with Membrane Solutions filter straws and most standard 28mm screw-cap models. Use it as a portable filtration system to safely drink from rivers, lakes, streams, snowmelt, or municipal sources—no need to carry pre-filtered water everywhere.

Technical Specifications

• Capacity: 23 fluid ounces (approximately 680 milliliters)
• Material: BPA-free, food-grade plastic
• Dimensions (when filled): Approximately 9.5 inches tall by 4.5 inches wide
• Dimensions (collapsed): Approximately 9.5 inches tall by 1.5 inches wide
• Cap Thread Size: 28mm standard screw thread
• Included Accessories: One collapsible water bottle; one metal carabiner clip
• Note: Filter straw not included unless purchased separately

Benefits & Use Cases

This collapsible water bottle excels in environments where space, weight, and accessibility matter. Its generous 23oz capacity means fewer refills during long hikes, bike rides, or yoga sessions, while the lightweight construction minimizes added strain on your pack. The ability to collapse completely allows you to carry it anywhere—even in tight spaces like airplane seatback pockets or small daypacks—without sacrificing hydration reliability.

One of the standout features is its compatibility with water filter straws. By pairing this bottle with a compatible straw, you transform it into an emergency-ready or adventure-friendly hydration tool. Simply fill the bottle with untreated water from natural sources, attach the straw, and sip safely as you squeeze. This makes it invaluable for backpacking, camping, survival preparedness, or any scenario where bottled water isn’t practical or sustainable.

Beyond outdoor activities, this bottle fits perfectly into everyday routines. Use it for gym workouts, office commutes, school lunches, or errands. The leakproof design ensures your bag stays dry, and the carabiner lets you clip it to strollers, gym lockers, or purses for quick access. Its durable build withstands regular use without degrading, making it a long-term investment in sustainable hydration.

Important Notes

• This product should be hand-washed only. Do not place in dishwashers, as high heat and harsh detergents may damage the seal or deform the material over time.
• Avoid prolonged exposure to extreme heat or direct sunlight (such as leaving it in a hot car), which can warp the plastic or compromise the integrity of the collapsible structure.
• Always ensure the screw cap is fully tightened before carrying to prevent leaks during transport.
• Filter straws are sold separately and not included unless explicitly stated in the product package details.
• While designed for durability, treat the bottle with care during rough handling or sharp impacts to maintain optimal performance.