The Nathan SpeedDraw 2 Insulated Handheld 18 oz Flask, features an updated shape that is easier to hold and squeeze and keeps fluids cooler longer. This versatile and lightweight carrier features a power mesh pocket perfect for most smart phones and small zippered pocket perfect for keys or credit cards. Details: Stay cool: Insulated bottle keeps your water cooler longer. Sip quick on the go: Enhanced bottle design and materials offer a more comfortable hold and effortless squeezing for hydration on the go. Easy to store: Power mesh pocket with fold over construction allows you to securely store almost any size of Smart Phone. 18 oz / 535 mL double-wall insulated and Hi-Viz SpeedDraw Flask with Push-Pull Blast Valve™ cap offers quick bursts of fluid and keeps liquids cooler longer Ergo flask with a new sweat-channeled, no-slip grip insert for an easier carry Integrated reflective print within flask and on hand strap offers 360-degree visibility ideal for low-light conditions Double-wall construction keeps fluids cooler 20% longer than other insulated bottles Fully-adjustable hand strap with chafe-free thumb hole that enables grip-free running Large, expandable, zippered pocket fits most smartphones, plus nutrition, keys and small essentials