This is a very cool and edgy looking running vest and has a moden, sleek and snatched look to it. It sizes small and was just a smidge too tight around my 34DDD chest. I will keep scouting for a larger size because I love it! LULULEMON insulated storage running vest - size 8 - vapor ivory - excellent preowned condition add another mile to frosty runs. This insulated vest has integrated storage so you can take your gloves, beanie, and water bladder with you on brisk days. designed for: running base warmth features our lightest weight insulation and versatile layering for changing weather and active living. - adjustable front belt bag has internal pockets to keep snacks and gels organized - integrated backpack has a sleeve that fits a 1L water bladder - zippered chest pocket - reflective details - bladder and clip not included - slimfit skims your body - hip length fabric: glyde - water-resistant - windproot - two-way stretch - primaloft insulation is warm, even when wet