Aquasana Multicolor  Silicone Sleeves for 500ml Borosilicate Glass Water Bottles, 6-pack Designer silicone sleeves - stylish multi-colored sleeves provide a non-slip grip by reducing condensation slippage Bottles not included - use genuine Aquasana borosilicate glass bottles only to ensure the silicone sleeve fits properly. Made to fit 500ml glass water bottles: AQ--WB-6 Dishwasher Safe - wash your bottle and your sleeve together in the dishwasher for convenience Bottle your own - small enough to carry everywhere, big enough to quench your thirst. Fits in most standard car cup holders Proper Application - turn your silicone sleeve inside out. Set the base of the water bottle at the bottom and roll the sleeve up to the top - easier when bottle and sleeve are wet