<p>The gel bead, mainly containing sodium polyacrylate cross linking copolymer, is safe and non-toxic. It is recommended to use the gel beads after soaking them in clean water for 3 to 4 hours at normal temperature.</p><p><br></p><h4><span style="font-weight: bold;">Highlights</span></h4><p>Custom gel bead size perfectly fits the S1 Blaster.</p><p>Custom color allows added trajectory effects after the gel beads are launched.</p><p><br></p><h4><span style="font-weight: bold;">Tips</span></h4><p>The gel beads are specially designed for the RoboMaster S1. Do not attempt to use the gel beads for any purpose with other products.</p>