5 LBs of loose Primo Chalk in a 5 gallon bucket for weight lifting and rock climbing. AS SEEN IN: - The 2010 CrossFit Games (http://bit.ly/hMnd9L) - Power Magazine (thepowermagazine.com) Preferred by athletes around the world, loose Primo Chalk conditions hands with essential oils and leaves skin more resilient. When creating Primo Chalk, we combined quality hand chalk (magnesium carbonate) with a blend of five key essential oils and an additional natural drying agent to create a better gym chalk. And, these essential oils have been proven (http://www.primochalk.com/effect-diffused-essential-oil-blend-bacterial-bioaerosols) to actually kill Staph bacteria. Check out some reviews at: http://breakingmuscle.com/other-gear/product-review-primo-chalk http://rvproj.com/sponsors/