Review on Water Bottle Sleeves - 6-Pack Silicone Glass Holders for 16-18 oz Capacity 🧴 - Anti-Slip Protection for Beverage Containers - Insulating Carriers for Smoothies and Juices (Vibrant Colors) by Daniel Ton

I bought these to match my bottles (also from Revain). They fit perfectly and make the bottles easier to handle. I like different colors so it's easy to tell who's drinking from which bottle by placing the bottles down. They are easy to remove and clean. Can't comment on durability as we haven't had them long, but so far they seem pretty good. They also come with cleaning instructions.