Wolfx ADULT FREE STANDING KICKBOXING BAG SET? STABLE FLOOR SUCKING BASE - Rounded ABS base tank (33'' high by 19.6'' DIA) is engineered for easy roll away or relocation. HIGH-QUALITY MATERIAL - Stainless steel tube stand is encased in multi-layer construction: 2mm thickened PU leather striking surface, high-density EPE foam, eco-friendly fabric buffer.