Hydro Flask 40 Oz Wide Mouth Water Bottle w/ Flex Straw Cap Oat. The large opening makes it easy to add ice - and get yourself a bigger gulp. Specifications for Hydro Flask 40 Oz Wide Mouth Water Bottle w/ Flex Straw Cap: Manufacturer: Hydro Flask Color: Oat Fabric/Material: Stainless Steel Volume: 40 oz Hydration Cap Type: Flex Straw Cap Cap Color: Black Width: 3.6 in Height: 11.7 in Weight: 1.05 lb Features of Hydro Flask 40 Oz Wide Mouth Water Bottle w/ Flex Straw Cap 24 hours cold 12 hours hot TempShield double-wall vacuum insulation Leakproof when closed Won't retain odor or leftover flavor Durable stainless steel Wide Mouth opening is ice-cube friendly Not for use on a stove in a microwave or freezer Keep hot liquids out of the reach of children Package Contents: Hydro Flask 40 Oz Wide Mouth Water Bottle w/ Flex Straw Cap Hydro Flask DTC-W40BFS114: 40 Oz Wide Mouth Water Bottle w/ Flex Straw Cap Oat