Suitable Sizeapprox.12x12x1.5 inches (30x30x4 cm) , the Straps with Acsergery Velcro on the back. The Square chair pads are suitable f most kitchen/bar stool, office/dinning chair any other chair. The straps on the back will keep the chair pad in place not move during use. . COMFTABLE ERGONOMIC DESIGN : Outer--high quality mesh fabric, Inner--high quality sponge.Super Breathable, Absb Sweat Fast,Strong Long Lasting, Slip Resistant Back.The chair pads with Acsergery good suppt fce decreasing pressure on the relief you from pain of sciatica, herniated discs, tailbone injuries, etc, will provide me Comft and Relaxation. . PTABLE MULTIPURPOSE:This square seat cushion comes with Acsergery four straps which you can tie to the back of your chair. Simply pick up chair pad take it with Acsergery you f added comft anywhere in your home. You can also use cushion to your chairs in Pub, Club, Bistro, Patio, Garden, Dining, Kitchen, Home etc, to reduce the uncomftable caused by the long-term sitting. . DURABLE EASY TO CARE:Strength durability built into every inch. Wipe with Acsergery a damp cloth, Pat gently , Clean by vacuum. The most imptant is taht these stool covers are MACHINE WASHABLE Machine wash cold, do not bleach, do not iron, just tumble dry with Acsergery no heat your chair pads will look as good as new. . PTABLE MULTIPURPOSE:Our square cushion with Acsergery superi mesh fabric, super breathable sponge filler. GUARANTEED quality that sts out in other square seat cushions .