Aka …Hydro bling : ) Polished stainless, holds 27oz / 800ml top cap is bamboo which is a nice touch. I purchased two of these along with polished stainless bottle cages which complements my other polished LHT components. Ooh now I can bring my Scotch camping…. WOOT! Bike is just about complete and planing for its first outing this Saturday. Final touch are my Nitto tour racks I have on order.