Pressboard with matching TyvekŪ tape. 2" expansion, unless noted. Straight cut tabs. 1" capacity prong fasteners on both sides of dividers, and 2" capacity prong fasteners on inside covers. All inside dividers are 17 pt. Kraft stock and contain 10% post-consumer material. Covers contain 75% recycled material with 25% post-consumer material. 10 folders per box.