Hydrate single-wall medical grade BPA free high borosilicate glass bottle wrapped in a soft grip silicone sleeve. This durable glass won’t crack under extreme temperatures, glass and silicone are dishwasher safe, natural eco-friendly water bottle. Features a leak proof BPA Free bamboo screw-on lid. Color silicone sleeve adds style and provides protection from slips and falls Durable food-grade bamboo lid and the cotton rope for easy carry; perfect mouth size for spill free drinking. Do not freeze, do not microwave. Volume capacity is 750ml.