Dalbello DS 110 Women’s Ski Boot Size 27.5 (2020) About 40 days of use From website: The Dalbello DS series stands out with a new construction devoted to delivering optimum all day comfort in a high performance, 100mm Last, 4 buckle overlap boot. Part of delivering greater comfort lies in building a lighter weight boot. Dalbello designers devised a bi-injected Power Cage construction thjat consists of a hard PU frame, integrated with a second injection that results in a ligher weight, slimmer looking design with great power transmission and ease of entry/exit.