Spiderman Magic Pop-up Towels - Set of 3 (Styles May Vary) by Marvel Marvel Spiderman Magic Towels for Kids. Set of 3 Spiderman Pop-Up Expanding Towels. These compact towels grow in water to the delight of boys and girls alike. Great Marvel Spiderman bath toys. Just toss magic growing towels in the bath and watch them expand. Magic expanding towels for kids are a classic bath toy. Officially licensed Marvel Spiderman bath toys product. Perfect as Spiderman party supplies, party favors and super hero stocking stuffers for kids.