Use with 11x17 tabloid sheets. Quickly customize spine and cover with one 11x17 sheet. Great for multiple presentation preparation. 3 Year Cover Guarantee - 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. XtraLife material will not stick to materials inside. Endures extreme temperatures. Cold crack safe to -50 degrees Fahrenheit. Non-stick cover has clear overlay for 3 sided customization. 3-inch White.