The Amplux boasts a Dyneva midsole and carbon blend (Nylon and 15% carbon fiber) support plate. A great choice for variable terrain, and for intermediate and advanced runners. - A one-part, seamless midsole - Surface: PU reinforced Reptex Sport material for durability - Lowa Trac Agility outer sole works in variable conditions - Heel and cuff with extra padding - Heel stack 24.5 mm, front stack 18.5 mm, drop 6 mm You can print [Lowa's size guide](https://backend.lowa.com/media/pages/279dbaf5-f17d-8f8e-f346-2fa87f33af08/f5824c15-4898-7842-05dc-fc1c15437963/67d595c7-df97-d740-ea02-47a08f43b1c9/adae9d706e-1705483145/size_sheet_uni_en_08_21.pdf) and use a credit card to measure your foot. The card is used as a spacer to place the A4 paper just far enough from the wall that its length is suitable for use in this way.