Cardinal XtraLife binders hold a 3 Year Guarantee against cover cracking (For a free copy of the guarantee, write to: TOPS Products, 1001 Rialto Rd., Covington, TN, 38019, USA, Attn: Product Guarantee.) Cover withstands extreme cold (safe to -50°F). The locking Slant-D rings hold 25% more than standard round rings. PVC-free, non-stick cover is archival safe. ClearVue cover is customizable on all three sides. Comfortable GelTab triggers. Cover board made with at least 98% post-consumer fiber. 3", 725 sheet capacity. White.