Experience the next generation of balance training with the BOSU(R) K-Series Balance Trainer - our lightest model yet, designed for maximum portability and performance. Weighing just 8 lbs, this trainer features a soft-touch surface for superior comfort and an anti-slip grip base that stays steady on any surface. Perfect for home, gym, or travel, it's easy to assemble and ideal for enhancing strength, stability, and core control wherever you go. FEATURES: Lightest BOSU(R) Balance Trainer Yet - only 8 lbs! Soft-touch surface for comfort and durability Grip base with anti-slip design for use on any surface Easy to assemble and travel-friendly SPECS: Latex-free, burst-resistant bladder Durable neoprene washable cover 1 year limited warranty - Home use only Holds up to 136 kg (300 lbs) Weight: 3.63 kg (8 lbs) Diameter: 55 cm (22 inches) Height: 21.6 cm (8.5 inches) when properly inflated Includes: Dual-action hand pump and 2 plugs (in handle)