Make your Hydro Flask your own with a colorful, durable silicone Flex Boot. Customize your look and protect against bumps and dings. Removable, silicone boot adds extra protection to your Hydro Flask. L boot fits 64oz wide mouth bottles. M boot fits 32 and 40 oz wide mouth bottles. S boot fits 12-24 oz wide and standard mouth bottles. BPA-Free ️ No box included ️ 100% original and authentic Might include some dust because of shipping from the supplier. It can be easily washed with water when you're about to use the item. :) #hydroflask #flexboot #protection #protector #silicone #tumblerph #zerowaste #zerowasteph #hydration #protectivecover #drink #notosingleuse #bpafree #bpafreebottle