Original Manta Ray by Advanced Fitness, Squat Load Distribution Device
This is the original Manta Ray manufactured in the United States by Advanced Fitness. Don't accept any knock-off versions. Made with high-tech, polyurethane polymer, virtually indestructible for years of tough use. You could drive a big truck over the Manta Ray, without doing more than marring the surface. When using the Manta Ray, maintain an upright position when performing barbell back squats.
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