Streamlined protection where it counts.Powered by removable X-matter padding on your spine and larger surface area of your back, the Flow Upper Protective provides reliable protection against bigger hits. With a tight, ergonomic fit and sleeveless, fast-drying design, this trail essential wicks away sweat rapidly to keep comfort levels at a high. Two stash pockets mean easy access to tools, while the form-following Flex-Zip at the front boosts wearability to the extent you may just forget you're wearing this piece.View Sizing GuideProtective X-matter foam at back (removable & exchangeable)Flex-Zip zipper that bends and flexes with movementStash pocketsAvailable in youth sizingEN1621-2:2014 L1 (back)