Works well and feels like it will last for a long time.
Kobayashi Pharmaceutical Magma Hand Warmer, Extra Long Type for Shoes, 3 Pairs x 3 Bags
Product Details
Kiribai Kairo Magma, for Shoes, Extra Long-Lasting [Set of 3 pairs x 3 bags]
Lasts for 9 hours!!
Non-slip design prevents shifting!
Maximum heat generation in the series
Expiration Date: 2026/4
Kobayashi Pharmaceutical
Daily Cleaning: Use a soft brush or damp cloth to gently wipe away dirt. Avoid harsh chemicals. For mesh areas, use diluted mild detergent and a soft brush.
Drying: Air dry in a cool, shaded place after cleaning. Avoid direct sunlight or high heat, which can cause fading and glue deterioration.
Storage: Stuff with paper to maintain shape when not in use. Store in a dry, ventilated area to prevent mold. Rotate between multiple pairs to extend lifespan.
Usage Notes: Designed for basketball. Not recommended for hiking, long-distance running, or other specialized sports where different performance features are required.


