Superior wheel control – Constant design & testing ensures the performance of our wheels lead the industry. 100% PC outer - Impact-proof and scratch resistant PC offers the ultimate luggage protection Space expansion from the middle - This provides up to 25% extra space while still ensuring stability Combination TSA lock - combination lock provides security and is TSA compatible Overall Dimensions: 20.7 x 13.8 x 9.4" + 2.5" Exp, Case Dimensions: 18.3 x 13 x 9.4" + 2.5" Exp, 6.11lbs