O'Neal MX Performance Vest. Weather-resistant main body construction featuring two-way stretch with mid-weight fabrics. Four-way stretch Lycra side panels featuring mesh vents for breathability. Athletic fit, not too wide, not too slim. Four (4) zippered pockets (two (2) interior and two (2) outer). Two (2) additional open top inside storage pockets for larger items. Elastic stretch fabrics around the waist and arms to keeps the vest snug around the body. YKK zippers throughout.