Perfect fit on all Aquatix 21oz FlipTop Bottles Prevent the bottom base of the bottle from scratches, dents, and dings. Anti-slip material helps prevent your bottle from being knocked down accidentally BPA free, no toxin included, can be rinsed and wiped clean after use, dishwasher safe Mish mash our colorful sleeves with the Aquatix Bottles in your life. Featuring the Aquatix Protective Silicone Sleeve for the Aquatix 21oz Flip Top Bottles. Help protect the base of your bottle with our lightweight anti-slip sleeve; and prevent scratches, dents and dings. Bring color into your live and accessorize your Aquatix 21oz FlipTop Bottles with our multicolored sleeves and cap straps.