Empty Bottlers Empty bottles, water bottles (1L bottle) Purchased at an event last year. It has the same 28mm mouth diameter as regular plastic bottles, so Sawyer Mini and Hydrapak 28mm water filters can be attached without any problems. Please understand that there may be scratches and minor marks on the bottle and stickers due to the nature of the product. Long Trail My Bottle LIFEWATER LIFE WATER Yamatomichi Zpacks Gossamer Gear Hyperlite Mountain Gear UL Hike Ultra Light Hiking Backpacking Gear Hikers Depot Moonlight Gear RIDGE MOUNTAIN GEAR Free Light atelierbluebottl Mountain Laurel Design ULA UltraLight Adventure Equipment Zimmer Built Rayway Rawlow Mountain Works Jindaiji Mountain Works INTEGRAL Designs BPL Backpacking Light Locus Gear Sixmoon Designs Tarp Tent Samaya Big Sky international Big Agnes MSR Zerogram