Hydro Flask 710ml Lightweight Wide is 25% lighter than classic bottles from Hydro Flask. The Trail series is made from an even thinner wall of Pro-grade stainless steel, but is still very durable. Condensation and temperature transfer to the outer layer is prevented by the TempShield technology, which keeps the contents cold for up to 24 hours or warm for up to 12 hours. It's also lighter thanks to the Honeycomb insulating honeycomb cap, perforated handle and aluminum joints. It is intended for the most difficult endeavors (ski touring, climbing, cycling), where weight is essential.