Quickly customize spine and cover with 1 letter sized sheet. Great for multiple presentation preparation. PVC-free, non-stick XtraLife® material restricts cracking along the cover seam for long lasting durability. Endures extreme temperatures. Locking Slant-D® shape rings with GelTab™ triggers hold 25% more sheets than standard round rings. Cover board made from 100% recycled fiber with at least 98% post-consumer fiber. 1.5" White. 375 Sheet capacity.