The S1 Protective Jersey is the first line of defense when it comes to meeting the ground on today's BMX track or mountain bike course. The S1 Protective Jersey features strategically placed vented foam patting throughout the front, back, shoulders and arms. The elbows are reinforced with a plastic sleeve. The jersey is lightweight, very flexible and comfortable to wear. One feature that sets this protective jersey above the rest is the side zipper that allows for easy on-and-off. No more fighting to get your jersey on or off. Available in youth and adult sizes.