Ultemp The Swag Project Supreme Ultra Heat Resistant Cotton is the cleanest, best tasting organic cotton on the market for vaping. Made by vapers for vapers! This cotton is scientifically formulated to handle ultra high temperature. Constructed out of 100% organic materials and cotton fibre blended with cellulose fiber with no chemicals involved. The Swag Project is perfect for rebuildable atomizers, rebuildable tank atomizers, bottom feeding atomizer.