FoamSTABLE AND SUITABLE SIZE FOR MOST SEAT: approx.10*10*2in , 10*10*3in , 11*11*2in , 11*11*3in , 12*12*2in , 12*12*3in , 14*14*2in , 14*14*3in , 15*15*2in , 15*15*3in, the straps with snap on the back. The square chair pads are suitable for most kitchen/bar stool, office/dinning chair or any other chair. The straps and non-slip bottom will keep the chair pad in place and not move during use.DURABLE AND EASY TO CARE - Strength and durability and built into every inch. The most important is taht these cushions are MACHINE WASHABLE! Machine wash cold, do not bleach, do not iron, just tumble dry with no heat and your chair pads will look as good as new.CUSTOMER SATISFACTION - we will provide you with free return/excservice. You can buy with confidencePORTABLE AND MULTIPURPOSE - This square seat cushion comes with two straps which you can tie to the back of your chair. Simply pick up chair pad and take it with you for added comfort anywhere in your home. You can also use it to your chairs in Pub, Club, Bistro, Patio, Garden, Dining, Kitchen, Home etc, to reduce the uncomfortable caused by the long-term sitting.PROFESSIONAL HIGH GRADE QUALITY - Our Chair Pad with superior 1polyester shell and high quality foam filler. GUARANTEED quality that stands out in other square seat cushions!