water droplets on waterproof fabric surface, water repellency, beading up effect. high-resolution studio of black outdoor sport

waterproof fabric water repelling beading droplets surface texture closeup view background blurred focus copyspace studio high resolution product outdoor sport synthetic material black color small round shapes evenly distributed stages drying absorption liquid drop beads bead effect repellent hydrophobic hydrophilic tension wettability contact angle adhesion cohesion interfacial energy droplet polymer