You're so chilled...and so is the liquid in your new Marlin Blue insulated bottle. No adventure is complete without a supply of fresh, cool water. A Yellow Lids bottle is made for your active lifestyle using 18/8 (304) grade stainless steel, double-walled technology, and vacuum-insulated which keeps drinks hot for up to 12 hours and cold for up to 24. Yellow Lids bottles are all leak-proof too - so you can concentrate on being the master of your destiny! With our powder coat finish, they're super durable too. Live those hopes and dreams!