Yuto Nagatomo Core x Tube Training - Includes 2 Original Tubes! #k8810 Books/Magazines For everyone who has "given up" or "felt unsatisfied" with core training. The definitive edition of Nagatomo-style training, the second installment of "Body Transformation"! ◆ Title: Yuto Nagatomo Core x Tube Training ◆ Author: Yuto Nagatomo ◆ Publisher: KK Bestsellers ◆ Published: February 2015 ◆ Price: ¥1,389 The tubes were used about twice. They have been stored at home for a long time without use. I am selling them to declutter. Please understand that these are used items. Thank you.