FeetUp are socks that  sound whenever the user jumps, or is off the ground. FeetUp stimulates children to play against gravity, one of their most frequent activities during free-play. According to our evaluations, with FeetUp each found his/her personal style to play with the accessory; doing ballet, capoeira, handstands and so on. This led children to associate with someone with whom they had a common interest, share their knowledge and  improve their performance together, generating challenging social experiences.