These bags have proven themselves to be the strongest and most comfortable of their type on the market. Sand Bags are fabricated from a 2# charcoal ester, S.E. foam, backed with a water-repellent nylon taffeta, filled with silica sand, and double-stitched with a heavy-gauge nylon thread.
Product URL : http://www.coneinstruments.com/foam-covered-sand-b
Last Updated : 11/09/2012