SILICONE EGGS - x-soft - yellow
https://www.euroserviziexport.com/shop/47140-silicone-eggs-x-soft-yellow-6356
https://www.euroserviziexport.com/web/image/product.template/6356/image_1920?unique=c207926
These Thermoplastic Elastomer (TPE) pads have different levels of hardness to exercise the hand and fingers.
They improve grip strength while reducing fatigue.
