The Classic Collection is classically designed with a traditional look focusing on high level performance and style - for a great level of impact resistance. PROTECTION LEVEL - Premier League FEATURES - Combination of HDF (High Density Foam) and additional cane rods provide the perfect mix of impact absorption. Gel Zone in knee with additional EVA and side wings to provide impact resistance. Leg Hugging design with 'butterfly' padded straps and padded buckles. Additional foam around the ankle for comfort and fit.