With SRtech Gavin's many upgrades -- including memory foam insoles, flexible design and enhanced traction -- independent walkers can make the world their playground. SRtech™ provides a comfortable yet sturdy foundation for feet, enabling toddlers to walk steady on their own.Toddler boy's and girl's hiker boots made with leather upper and adjustable hook and loop closure Ortholite® memory foam for enhanced comfort Seamless construction that cradles the foot's natural shape Oversized opening for easy-on