Hummel storm trainer light fbOfficially sized with a lighter design, the STORM TRAINER LIGHT FB is the ideal candidate to help you train to your full potential. Double layers of foam wrapped around a coiled bladder ensure the best shape retention and rebound with minimal impact on your foot, while the 100% textured PU outer increases grip and durability. Heat-sealed seams also reduce moisture absorption, ensuring no added weight. You can use your hummel® soccer ball on grass, artificial pitches and indoors.Textured PU with heat-welded seamsWrapped bladder for excellent shapeDouble foam for extra softnessSpecially developed to hone your skillsHybrid ball suitable for grass, artificial and indoors