A crafty, functional bottle opener cap. This robustly constructed cap is designed to withstand the wear and tear of everyday use. A durable, flexible leash allows for a comfortable two-finger carry and each cap includes a built-in bottle opener for cracking into a cold one Prost! Plus, it's made with ThermaGrid waffle insulation to help keep your drinks iced up to 72 hours no matter how hot it is outside.