Quickly customize spine and cover with 1 letter sized sheet. Great for multiple presentation preparation. XtraLife covers are guaranteed not to split or tear for three years.To obtain a free copy of the XtraLife cover guarantee, please write to:TOPS Products, 1648 McGrathiana Pkwy., Suite 130, Lexington, KY, 40511 USA. Attn: Product Guarantee. Locking Slant-D shape rings with GelTab triggers hold 25% more sheets than standard round rings. Endures extreme temperatures. Cold crack safe to -50 degrees Fahrenheit. Non-stick cover has clear overlay for 3 sided customization. Cover board made from 100% recycled fiber with at least 98% post-consumer fiber. 2-inch White.