The MigFix Textured Protective Boot (sock) is designed specifically for YETI Ramblers in 1/2 Gallon size, providing a secure fit for hot or cold beverages. 3D printed from an ultra flexible and shock absorbing TPU material. The flexible TPU material  is dishwasher safe. It offers protection against bumps, dents and scratches that can arise from normal use. While adding a touch of style to your drinkware. Made in the United States, this accessory is a practical and stylish addition.