OMM Vector Half Zip Long Sleeve Running Top Thicker, running first layer for use either in colder conditions or as a start line insulation piece over running singlet. Super high breathability due to pile back and long zip for ventilation. Thumb loops. Official print on right chest. Perfect for running in cool conditions as the midweight first layer will keep you warm enough without being too overbearing, and the zip can be pulled right up to the top to keep in the warmth or lowered to allow air in when you are midway through your workout. Having a half zip allows for an easy fit over your head and is just as simple to remove. The fabric contains flat seams which allow a full range of movement whilst you train which is also perfect for maintaining comfort and durability so you have a comfortable and reliable garment to help gain the best results. 4 way stretch fabric is also used to provide an extra source of comfort and durability so you can be confident in the garment and r