These were purchased in bulk within the sports club in August of this year, and the surplus is being offered for sale. Brand new, unused! Comes with an official training manual. For pelvic muscle training. Tightens the loosened pelvis in daily life. Size: Approximately 20.5cm long x 4.5cm wide x 4cm high Weight: Approximately 70g/piece Material: PU Color: Orange Please understand that this is personally managed. Thank you.