Columbia Chill River II Arm Sleeves Size:International:S/M so the sides of your

so the sides of your bottle stay dry

The adjustable shoulder strap allows you to find a fit that is comfortable for you

Your Big Student style is a backpack with lots of pockets

stainless steel pivots allow the strap to move easily - BPA-Free and Phthalate-Free ●Lifetime Warranty

Cotton straps make for the most comfortable hold and the shoulder strap is both adjustable and removeable if required

Columbia Chill River II Arm Sleeves Size:International:S/M so the sides of yourLong, Hot Days Designed For Long, Hot Hours In The Sun, This Columbia Chill River Arm Sleeves, Packs Serious Uv Protection For Supreme Protection From The Heat And Sun. Omni FREEZE advanced cooling Omni SHADE UPF 50 sun protection Omni WICK Mesh ventilation Flat lock construction Thumb holes Silicone grip at top of sleeve