15 MIL smooth wall poly inserts. Fits a 55 gal drum. Smooth side walls are made from vacuum formed and seamless low density polyethylene ldpe, high density polyethylene hdpe, and polypropylene pp.. Our rigid drum & pail liners meet FDA specifications and are BPA free. 25 per case, price be each, must order in multiplies of 25. Ships in over size carton 35 x 21 x 15".