I bought this to use with a shoulder strap while snowboarding, but I ended up not using it, so I'm selling it. The first photo shows a different model number, which appears to be a successor model, so please use it as a reference. *Please read my profile before commenting.* The following is a reprint from the official online shop: This bottle cover uses foamed rubber with excellent heat and cold retention properties. It enhances the heat and cold retention of clear bottles and functions as a protective cover when attached to an Alpine Thermo Bottle. *The heat and cold retention effect does not change.* It comes with D-rings to attach a separately sold shoulder strap. Specifications 【Material】3mm thick foamed rubber, double-sided jersey 【Weight】30g 【Colors】Blue (BL), Dark Gray (DGY), Ivory (IV), Red (RD) 【Size】Φ6.6 x 13.6cm 【Compatible Items】Clear Bottle 0.5L, Alpine Thermo Bottle 0.35L