Without AIR PUMP Before purchasing, please choose the set with or without air pump according to your needs (the price is different) Comes with AIR PUMP Before purchasing, please choose the set with or without air pump according to your needs (the price is different) Why are there two options: [With Air Pump] and [Without Air Pump]? Catering for customers with different needs, if you already have air pump, you don't need to pay extra for the air pump, you can buy the SKU [WITHOUT PUMP], which will be cheaper. If you don't have air pump, you can choose the SKU [WITH PUMP]. What can I do to clean sweat stains after use? Hmtaolife air rollers are very easy to clean. After you have used it and wiped it with a damp cloth, just leave it in a shaded or ventilated area for 15-60 minutes. What services will I receive after purchasing? All products by Hmtaolife come with a 180 day after-sales service.