Product Name: Pilates Ball Weight: 100 grams Diameter: about 25cm Number of pieces per carton: 300, carton dimensions: 72*50*32cm, gross weight: 32KG Packaging: Individually packaged in an OPP bag, comes with an inflation tube that is clipped inside the ball The product is shipped without being inflated; you can inflate it yourself upon receiving it Inflation instructions: This product is an inflatable item. Each ball is machine-inflated and shaped during production, then vacuum-sealed and packaged. Due to variations in individual inflation, there may be slight size discrepancies. We recommend purchasing an air pump for inflation, as it will be more convenient. Hand-pump air compressors are shipped in random colors; color selection is not available. For bulk orders, please contact customer service. Slight size variations are not considered quality issues. Please consider this before purchasing if you are particularly sensitive to such discrepancies