This system on the Tech 3 also provides ankle padding to reduce shock. The sole of the Alpinestars Tech 3 All Terrain boots provide a rigid platform with the contoured tempered steel shank that has been over injected with a dual density rubber to provide tons of grip and give you sure footing. The All Terrain version of the Tech 3 line uses a deep lug sole to provide great traction when others boots will leave you slipping. The Tech 3 All Terrain boots have extended inside and outside plate guards to provide protection on the side and toe-box areas. The Alpinestars Tech 3 All Terrain boots have an internal plastic reinforcement placed on the inside of the boot. This reinforcement provides rigidity to the boot for support. Thick stamped suede covers this up and provides contact grip and heat resistance. The calf plate also helps out with grip, support and side contact on the Tech 3 boots. Alpinestars uses reinforced leather up the back of the Tech 3 All Terrain boots, and their action leather on the upper section for durability. The instep flex-zone has also been stitched for additional support and durability. The Tech 3 All Terrain boots will keep you strapped in with the four high impact resistant buckles that feature memory positioning and quick release buckles. Alpinestars uses Velcro® attached to the elastic stretch PVC extended gaiter to seal the top of the boot and prevent water entry. Alpinestars adds plenty of comfort features to the extensive list of protection features. The Tech 3 All Terrain boots use a poly-fabric lining in addition to a multi-density EVA foam keeping your feet cozy. If you require a special foot bed Alpinestars accommodates your needs with a removable anatomic foot bed.