The Vector 4Seasons is an ultra high-performance tire for a broader range of conditions with a reinforced casing, wider tread cap and dedicated Dynamic:Silica4 compound.Tubeless Complete: A proprietary design that features all the benefits of a Tubeless Ready (TLR) tire but will also better maintain inflation pressure than a traditional TLR tire. A multi-compound material layer is added to the tire casing allowing for improved air retention while providing additional puncture and cut protection with minimal increases in weight. This unique design means more sealant remains after installation, ready for the moment you need it. The R:Shield is a breaker belt found underneath the tread cap, providing an extra layer to improve puncture protection while maintaining optimal rolling resistance characteristics. Armor – Bead-to-bead casing layer for air retention and cut/puncture protection. Compatible with both tubeless crochet (TC) and tubeless straight sidewall (TSS)-type rims. Dynamic:Silica4 compound is formulated to minimize rolling resistance while enhancing wet grip.