New, Unused SEV Looper type M [SEV Looper type M SEV Necklace] (Red, 46 cm) Unisex (Men's and Women's) SEV Looper type M The "SEV Looper type M" is a health and sports accessory in the form of a SEV necklace that supports the entire neck area with the patented "SEV" technology. Lightweight, with SEV built into both the loop that fits snugly around the neck and the attachments. You can use it every day, from daily life to sports. It aims for a comfortable daily life and a well-balanced, healthy body.