Borosilicate glass bottle 1 L with silicone sleeve and bamboo lid

Why it is on the list

Borosilicate glass body with a silicone protective sleeve and a bamboo lid with a carry loop, listed for liquids from -20 to 150 degrees C.

Watch out for

Glass is heavier and can still break on a hard drop despite the sleeve, and the bamboo lid should be kept dry.

We have not physically tested these products. Our shortlist is research-based: we check what the listing says, favour non-plastic main materials and name the limits we can see. Always read the listing for sizes, certifications and care instructions.