SKLZ Gold Flex Golf Swing Trainer Warm-Up Stick The SKLZ Gold Flex Golf Swing Trainer Warm-Up Stick ($72) is advertised to improve swing tempo, strength, and flexibility, and it offers a low-impact stretch to get dad prepped and ready for golf season. Image Source: amazon.com SKLZ Gold Flex Golf Swing Trainer Warm-Up Stick $72 from amazon.com Buy Now