18/8 Pro-Grade stainless steel for pure taste and no flavor transfer
Compatible with wide mouth Hydro Flask bottles
Honeycomb™ insulated Flex cap for optimum temperature retention
Dishwasher safe
The Hydro Flask Wide Mouth Stainless Steel Flex insulated bottle cap lets you enjoy your drink all day long. Made of 18/8 Pro-Grade stainless steel, this cap ensures pure taste and its Honeycomb™ insulation allows optimum temperature retention of your beverage. It is compatible with wide mouth Hydro Flask bottles.