The Closca bottle is a newly designed water bottle made of borosilicate glass encased in a silicone cover. A sturdy strap, also made of silicone, allows it to be attached to a backpack or bicycle. Just like the coating, the fabric strip at the end of the strap is available in different colours. For convenient cleaning, the bottle has two openings: one at the top, and one at the bottom allowing easy removal of the matching tea filter. An app complements the product experience.