Water Bottle Cover & Strap Set *The photo uses an 800ml Thermos water bottle. [Product Details] Compatible Size: For 750ml-800ml bottles (approx. 18cm height, 8cm diameter) Material: Easy-to-wash, stretchy sweat material Color: Simple solid black (easy to use at school) Shoulder Strap: Adjustable length (approx. 63-111cm) For school water bottle cases, club activities, sports days, leisure activities like fishing, heatstroke prevention, heat measures, etc. Compatible with various brands such as Tiger, Thermos, and Zojirushi. Can also be used as a PET bottle holder. My child uses this because their Thermos cover became tattered ♡ We inspect the product during photography, but due to being made overseas, there may be some loose threads or imperfect stitching. Please understand this beforehand. Returns are not accepted. We have various other items for sale, so please take a look if you'd like.