--- product_id: 156515378 title: "Thermi Protective Silicone Sleeve for Hydro Flask Water Bottles (18oz, 21oz, 32oz, 40oz, 64oz)" brand: "thermi" price: "€ 28.47" currency: EUR in_stock: true reviews_count: 7 url: https://www.desertcart.hr/products/156515378-thermi-protective-silicone-sleeve-for-hydro-flask-water-bottles-18oz store_origin: HR region: Croatia --- # Thermi Protective Silicone Sleeve for Hydro Flask Water Bottles (18oz, 21oz, 32oz, 40oz, 64oz) **Brand:** thermi **Price:** € 28.47 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** Thermi Protective Silicone Sleeve for Hydro Flask Water Bottles (18oz, 21oz, 32oz, 40oz, 64oz) by thermi - **How much does it cost?** € 28.47 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/156515378-thermi-protective-silicone-sleeve-for-hydro-flask-water-bottles-18oz) ## Best For - thermi enthusiasts ## Why This Product - Trusted thermi brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description ALL AROUND PROTECTION! Protect your flask from everyday wear and tear, dings, dents, and more. Durable silicone all around and a thick base helps to absorb shocks and drops. Whether you're on your way to the office, road trips, hiking, sporting events, or just at home, your Thermi silicone sleeve will protect your flask! PERFECT FIT! Ultra precise engineering makes your Thermi silicone sleeve a perfect fit for your 18oz, 32oz, 40oz and 64oz (1st Gen ONLY) Hydro Flask insulated wide mouth water bottle or similarly shaped bottles such as Takeya, ThermoFlask Fifty Fifty, Simple Modern, Swig Swavvy, and many more. ADD GRIP TO YOUR BOTTLE! Tired of your bottle slipping out of your hand? Thermi silicone sleeve's makes it easier to hold and grip your bottle. An innovative design provides an ergonomic and natural grip to your flask, perfect gift for a friend, coworker, or loved one with small hands or arthritis. DURABLE & EASY TO WASH! Premium, BPA-free silicone is durable and over-engineered to last. Premium silicone also makes it super easy to wash and clean your sleeve then towel or air dry. 100% SATISFACTION GUARANTEED! Your purchase is backed by our 100% happiness guarantee. If you're not happy, you will get a full refund! Your Thermi silicone protective sleeve is also guaranteed against manufacturers defects for 1 year! Please note: THERMI IS NOT AFFILIATED WITH HYDRO FLASK OR ANY OTHER FLASK/BOTTLE MANUFACTURER. Hydro Flask is a trademark of Helen of Troy Limited.Thermi products are intended for use with multiple bottle manufacturers. All other trademarks remain the property of their respective owners. Use of trademarks does not imply any affiliation with or endorsement by Hydro Flask or any other trademark holders. These trademark holders do not endorse Thermi products and we do not endorse the use of any other product. ## Features - About this item ALL AROUND PROTECTION! - Protect your flask from everyday wear and tear, dings, dents, and more. Durable silicone all around and a thick base helps to absorb shocks and drops. Whether you're on your way to the office, road trips, hiking, sporting events, or just at home, your Thermi silicone sleeve will protect your flask! PERFECT FIT! - Ultra precise engineering makes your Thermi silicone sleeve a perfect fit for your 18oz, 32oz, 40oz and 64oz (1st Gen ONLY) Hydro Flask insulated wide mouth water bottle or similarly shaped bottles such as Takeya, ThermoFlask Fifty Fifty, Simple Modern, Swig Swavvy, and many more. ADD GRIP TO YOUR BOTTLE! - Tired of your bottle slipping out of your hand? Thermi silicone sleeve's makes it easier to hold and grip your bottle. An innovative design provides an ergonomic and natural grip to your flask, perfect gift for a friend, coworker, or loved one with small hands or arthritis. DURABLE & EASY TO WASH! - Premium, BPA-free silicone is durable and over-engineered to last. Premium silicone also makes it super easy to wash and clean your sleeve then towel or air dry. 100% SATISFACTION GUARANTEED! - Your purchase is backed by our 100% happiness guarantee. If you're not happy, you will get a full refund! Your Thermi silicone protective sleeve is also guaranteed against manufacturers defects for 1 year! ## Images ![Thermi Protective Silicone Sleeve for Hydro Flask Water Bottles (18oz, 21oz, 32oz, 40oz, 64oz) - Image 1](https://m.media-amazon.com/images/I/61KxlkBe6cL.jpg) ![Thermi Protective Silicone Sleeve for Hydro Flask Water Bottles (18oz, 21oz, 32oz, 40oz, 64oz) - Image 2](https://m.media-amazon.com/images/I/71EY2tDA04L.jpg) ## Available Options This product comes in different **Color, Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Worth Buying *by J***3 on Reviewed in the United States on September 17, 2017* My family of 8 each have a hydroflask or similar 18/8 stainless steel with powder coat finish, water bottle. So far, we had purchased just the Onoola silicone sleeve, but this time I purchased this one. The Onoola is thicker, but not that much as to make a difference. This sleeve is a little taller, which is good if you go with another brand bottle than hydroflask. The S|M bottle is taller in a 40 ounce than hydroflask is, making this sleeve, come up a little higher, which is good because we have gotten dents on ours at the top. The Klear bottle, is a little shorter and bigger around, and this sleeve also fits it well. The Onoola has squares cut out of the sleeve and this one has circles, and I really like the way it looks with the bottle color showing through. Very nice product, and cheaper, which I like, if I don't have to sacrifice quality! The first bottle is a 40 ounce Klear, with the Thermi sleeve, the 2nd bottle is a 40 ounce hydroflask with an Onoola sleeve, the 3rd bottle is a 40 ounce S|M bottle with the Thermi sleeve. ### ⭐⭐⭐ Mixed bag of meh *by M***N on Reviewed in the United States on October 28, 2018* Ordered two 40 ounce size for our flasks: one black and one "translucent gray." They fit well and go on snugly if you follow the directions. BUT.... the "translucent gray" is really NOT a good color at all IMO and I can't imagine it looking good over any color flask. It's the color of dirty dish water and not really very translucent at all - just enough to make any color underneath look, well....yucky. I'm going to keep the black one because I do think it offers good protection. But AGAIN, the downside is that It sort of acts like a magnet for dust or any fuzz or mystery gritty stuff it happens to come into contact with. So if you don't wipe it down a lot, it feels kind of creepy. Maybe it will "wear in" and stop doing this. Someone told me to wipe it down with a baby wipe or make-up removal wipe and it would solve this issue. Tried it and it did help. ### ⭐⭐⭐⭐ fits my ONEISALL large glass water bottle *by G***D on Reviewed in the United States on November 12, 2018* i got this for my ONEISALL large glass water bottle ( https://www.amazon.com/gp/product/B07DK56HWV/ ), since it only came with a nylon sleeve which doesn't do anything except to carry the bottle around more easily. i, like many others, wanted a silicon sleeve as it gives it a little bit more protection from nicks, scratches and a little fall. obviously, this will not protect from a deep fall. so i measured circumference and height then looked for a silicon sleeve. the sleeve for the hydro flask, looks more popular, came close, about .06 mm bigger. i took the chance and bought this one because it looks like it covers more, the competitors had lots more or bigger holes than i wanted. the rating also helped a little. the sleeve for the 32 oz hydro flask, i think, would have been too low at around 7.5 inches. the one for the 40 oz hydro flask at 9 inches was just right, in my opinion. it's not snug but its fine as it would have been a pain to put on, it doesn't seem to slide off easily, however. there is that little bubble at the top but it doesn't bother me. enjoy!!! --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/156515378-thermi-protective-silicone-sleeve-for-hydro-flask-water-bottles-18oz](https://www.desertcart.hr/products/156515378-thermi-protective-silicone-sleeve-for-hydro-flask-water-bottles-18oz) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-04-23*