Bought in 2022, used for 4 months. Priced to sell. From the manufacturer: Upper: Soft Genuine Leather (1.4-1.6mm split leather; same leather used in boots and fine handbags) Outsole: PVC Truck: Aluminum Rounded Wheel: 2.44x1.5" / 62x38 mm 80A Durable 62 x 38mm outdoor high-rebound polyurethane wheels to absorb impact and offer a comfortable, smooth ride (The wheel size is 2.44x1.5" / 62 x 38mm). Indoor/Outdoor wheel with running face sanded. Bearing: ABEC-7 carbon high precision bearing Adjustable stopper Cushion: PU casting cushion 85A-90A