Grumpy Old Geeks Products Groove Belt Product Groove Belt 2 mentions in 1 episode A belt with an adjustable strap and magnetic clasp that the hosts discuss using. Mentions 556: Leaning Out Jun 3, 2022 32:17 It's the groove belt. Now, it's got a metallic clasp on it. 32:51 It was great for about a year, and then all of a sudden, it just slips all the time.