WaterVault Neoprene Bottle Holder, Adjustable Detachable Strap, Shoulder Sling & Hand Carrier Available in 2 Sizes: Regular & XL fits 1 Liter Hydro Flask Type Bottle The Water Vault Deluxe Bottle Carrier is a lightweight, comfortable sports water bottle holder that you can wear over the shoulder, cross chest as a sling or as a hand held carrier by removing the detachable straps and snapping the buckles together; the perfect insulated bottle holder with a 56 fully adjustable strap Available in two sizes; Regular fits any bottle up to a 3.25 diameter and a 10 circumference, XL size fits any bottle up to 4.25 in dimeter and a circumference of 12 including 40oz hydro flask styles; Regular size fits most 12oz, 16oz, 20oz, 24oz and 26oz bottles; XL fits 1-liter and 40oz bottles; Great for stainless steel and plastic bottles, sport and energy drinks; just choose Regular or XL; the neoprene stretches to accommodate most bottles Go hands free or use without the straps as a comfortable hand held carrier, constructed of soft insulating neoprene, the same material used in wetsuits; insulates your beverages for longer periods of time and reduces condensation build up (sweating) Perfect for walking, running, hiking, biking or anywhere in your travels; attach to your backpack and walk or ride unencumbered with the adjustable and removable shoulder strap; suitable for adults and children Available in a variety of colors; black, grey, army green, pink and purple; 90 day hassle free guarantee with proof of purchase