For each Organ Donation Awareness bracelet sold, Essential Jewels will donate 10% of the purchase price to Donate Life America. https://donatelife.net Bracelet is made with 8mm AAA grade natural Green Aventurine and Malachite stones. Available in several sizes, to determine your size, measure your wrist with a fabric tape measure If you want a size that is not listed, please reach out to me, I will gladly make whatever size you request.