It''s fine to buy off-brand jeans or a thrift store jacket, but when it comes to protecting your head when you hit the trails, it''s best to buy the best in the business. The Troy Lee Designs D3 Comp Helmet is one of the most incredible and life-saving things you could buy, and something you''ll appreciate when you and your bike, quite literally, hit the trail. Or a tree. Or a rock. Made with a carbon composite and TLD''s new Dual Density Shock Pad System, the D3 Comp gives you a lightweight and innovative way to keep your dome piece in once piece.