Bath Blocks Tug Boat and Barge lets children build floating bridges, towers and more in the bath. The Tug Boat and Barge add fun and imaginative play to the floating plays capes. Sometimes the most educational toys are the simplest toys-- toys with lots of open-ended possibilities that encourage young minds to think, to create and to explore. The best of these toys provide progressive layers of challenge for children to discover as they grow. At their very best, these toys encourage exploration, reward discovery and empower our children. Bath Blocks bring classic block play into a fun, fascinating, new, watery environment. The "sticky" viscosity of water (plus soap suds or shampoo suds) creates a cling between blocks and smooth, polished wall surfaces. The movement, buoyancy and flow of water add an engaging twist to classic block play. Bath Blocks empower children to create their vision as they experiment with geometry, addition, subtraction, multiplication, division, balance, structure and cause-effect. Bath Blocks develop basic STEM skills (Science, Technology, Engineering, Math). Bath Blocks have received Oppenheim's Gold Award. Made of phthalate free, mildew and bacteria resistant foam. Age: 3+ years due to small parts.