Designed for the minimalist user who takes only what they absolutely need in the BC. The Olicamp 550ml Titanium Space-Saver Mug features integrated titanium handles, graduated tick marks for measurement, steam holes for venting, and a locking triangular lid tab. We'd also like to mention that the mug fits snugly around the small 3.9 oz. butane canister, for the space-saving types out there. (includes mesh drawstring sack)