I didn't think I would have any problems as I don't have narrow or small feet. My shoe size is 39 EU or 8.5-9 US. I knew the bumps would protrude a bit and take some getting used to, but unfortunately the foot on the board was too long and wide and they didn't hit my feet in the right places whether I tried to line up at the top or bottom foot on board.
Versatile Back Massager with Heat - Perfect Gifts for Christmas, New Year, Mother’s Day, Father’s Day, Birthday - Shiatsu Neck & Shoulder Massager for Pain Relief and Muscle Relaxation
32 Review
Relax And Unwind With Miko'S Shiatsu Foot Massager - Switchable Heat For Ultimate Comfort
38 Review
STICKON Stainless Steel Gua Sha Scraper For Soft Tissue Mobilization And IASTM Therapy (M Shape) - Effective Massage Tool
43 Review
Electric massager Kitfort KT-2905, black/grey
64 Review