This is a Callaway Golf pet bottle holder (bottle case). ● Type Insulated/thermos holder for pet bottles. ● Design It has a sporty design with a white and black bi-color scheme, featuring the brand logo and a V-shaped chevron mark. There is a zipper at the bottom, allowing you to insert the pet bottle from below. ● Size Compatible with standard 500ml pet bottles. I received this as a gift, but I haven't had a chance to use it and it has been stored away. Although it is unused, please understand that it has been stored at home. Thank you for your consideration.