The Troy Lee Designs 3900 HW Bike Protection Vest is designed to protect your delicate frame from sudden impact on-trail. Its anatomical design and integrated protection zones safeguard from impact injury whilst remaining comfortable and functional during movement. Dense bio-foam covers the rear panel to protect the spine and other sensitive areas from detrimental injury, while the front torso and ribcage regions remain protected by generous padding throughout. Its wide neck opening and sleeveless design is tailor-made for trail-ready performance and endows the Troy Lee Designs 3900 HW Bike Protection Vest with an enviable feel when in motion.