Of course, it's just a joke. Penguins don't use warmers.

However, our patented Foot Insole Waremrs do really warm up your cold feet.
- Your soles of feet will be greatly warmed for 8 hours.
- Thin, 3 millimeter thick, and you won't feel bulkly at all.
- The Foot Warmers will be formed into your soles of feet during use and comfortably fit.

S.T.MYCOAL's patented technology: Our patented heating element formulation and plate application method only enabled to create such perfect Foot Insole Warmers.