The Hydroflask 24 oz Standard Mouth is compatible with a standard loop cap and sports cap. The thermal bottle is TempShield Protected. It keeps cold for up to 24 hours and hots for up to 6 hours. It is made of 18/8 Pro-Grade Stainless Steel and a sweat-free powder coat finish. The BPA-Free and Phthalate-Free bottle come with a lifetime warranty.