FITS PERFECTLY- Our silicone boot is designed to perfectly fit Stanley Adventure Quencher Travel Tumblers (20oz, 30oz, 40oz), Stanley H2.0 FlowState (30oz, 40 oz) with handle, Stanley IceFlow Tumblers (20oz, 30oz), Hydro Flask water bottles (24oz, 21oz, 20oz, 18oz, 16oz, 12oz), Hydro Flask 35/ 40 oz Travel Tumbler, and for Simple Modern 30/40 oz Tumbler, for Simple Modern 20/24/28 oz Classic & 14/18/ 22 oz Summit & 20/ 24 oz Ascent water bottle EXTENDED COMPATIBILITY- Our silicone boot is also compatible with other popular brands & sizes. It fits Owala 40oz stainless steel tumbler,YETI Rambler 20/ 30 oz Travel Mug & Tumbler, YETI Rambler 12/ 18/ 26 oz water bottle. Suitable for tumblers or water bottles with a base diameter of 2.8-3 inches（7.1-7.6cm) MAXIMUM PROTECTION - This durable bottom boot helps protect against dents, dings, and damage. Give your water bottle a longer life. SPECIAL BLINGBLING DESIGN - Our boots not only protect your water bottle from noise, dents, and damage, but they also make your water bottle appear shiny, creating a sparkling look for your favorite water bottle.Mix and match to customize your colorful look to make your bottle more unique and creative. BETTER SERVICE- Any questions, please contact us, we will reply within 10 minutes during working time