Lange have long been at the forefront of ski boot quality and design. This seasons RX Range features the same pedigree and race performance Lange are known for. All of Lange’s boots are now constructed using Lange’s Revolutionary injection process, Dual Core. Two types of plastic, one hard and one soft, get injected into the mould at the same time. The softer material naturally migrates to the front of the boot where the overlap is and the harder material migrates to the sole of the boot and spine. This process results in a boot that opens up nice and easy for you to get your foot into but without compromising the flex or performance of the boot. Once inside the 3D Liner gives you support and comfort and incredible connection to the shell.