HIDDEN-CAMERA TESTIMONIAL of shuffle-dancing star Elena Cruz (@ecruz_n). An LED shoe brand that sponsored her had me put Groove Soles on a pair for a music video shoot. I held my phone-camera down low while talking to her so she didn't know I was filming until afterwards:

Here's the other top shuffling star, Gabby David, dancing in Groove Soles. (Disregard the LED shoes on this page, both girls were sponsored by them but they prefer Adidas, Converse, etc.)