Swivel Rolling Stool Round Chair,Thick Sturdy Padding,Adjustable, No Back, Black Product Details Rolling Chair Color:Black Material:Aluminum,iron,sponge,PVC Adjustable Height:18.50-22.44 inches Seating Diameter: 15.75inches Seating Thickness: 4.7inches Base diameter:20.47 inches Weight capacity:450 lbs *Customer service:Please contact us for any issue.We are always willing to provide technology support and customer service.Our goal of after-sales service is to give our customers satisfied products and shopping experience.If you have any quality problem in one year,you will get 100% satisfied solution. Thick Pad??Seating diameter:15.75 inches,Thickness:4.7 inches;Thicker than ordinary.It help you sitting comfortable even after many hours. Rolling Smoothly??360 Swivel caster and ultra-quiet wheels allow for easy movement.Soft polyurethane wheels can prevent scratches on your floor.Easy to assemble/disassemble. Height Adjustable??Adjusting the height(from 18.50'' to 22.44'')with the Adjustable hydraulic gas lift.The chair?s cylinder has a short lift height.Please refer to the picture for the specific sizes before purchase,but Standard air gas lift can be replaced. Sturdy Durable??Weight Capacity is 400 lb.The base(20.47'')is thick and strong, the casters are high quality and durable. Wide application??It is a necessary tool for beauty hair salon,tattoo studio,shop,clinic,lab,home and office. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.