These do heat up, it’s takes about 20 minutes but my issues is with the belts. They are just too flimsy and they stretch out too much. I used for my shoulder and my wife used it for her back. She said she had to sit with a pillow behind her so the heat can really penetrate. I would not buy again.
Relieve Your Child'S Pain With Reusable Penguin-Shaped Ice Packs For Boo-Boos, Joints, And Teething - Hot And Cold Therapy Gel Beads For Effective Pain Relief (4-Count)
43 Review
Effective Ankle Cold Therapy With Aircast Cryo/Cuff: Gravity-Fed Cooler And One-Size-Fits-Most Design
48 Review
FridaBaby Mom Perineal Healing Foam: Pain Relief & Swelling Reduction for Postpartum Care
48 Review
Thermalon Moist Heat-Cold Therapy Wrap For Neck And Shoulders - Microwavable And Activated
41 Review
Flexible Tip Enema Bulb For Effective Cleansing With Cleanstream
24 Review
Pampers Active Baby-Dry 4 diapers (8-14 kg), 58 pcs., 3 pack.
27 Review
U By Kotex Security Maxi Overnight Unscented Feminine Pads, 112 Count (4 Packs Of 28) - Packaging May Vary
17 Review
Pampers Active Baby-Dry 4 diapers, 9-14 kg, 106 pcs.
114 Review