How to measure? Here we arrange all furniture type on sale fo you, hopefully it can help all of you. If you are unsure which size to choose, order the larger one.
1. Approx. Size For Wingback Chair
Width 27.5"-31.5"
Height 37.4"-43.3" 
2. Approx. Size For Recliner
Back Width 24"-32"
Height 29"-37"
3. Approx. Size For Tub Chair
28" L X 21" W X 27" H
4. Approx. Size For Armless Accent Chair
Overall: 26" L x 30" W x 26" H
Seat: 23.5" L x 18" H
5.Approx. Size For Futon
91"H x 26" W x 26" D
6.Approx. Size For Dining Bench
54" L x 18" W x 8" H
7. Approx. Size For Ottoman
45" L x 30" W x 19.7" T
We are strived to develop slipcovers for more sofa, please keep one eye on it if you need, thanks!