This perennial basketball style made history last century and remains a contemporary favorite in this one. Featuring premium materials, a vertically ribbed toe guard, a diamond-patterned outsole and the famous Posture Foundation insert, the Center Hi remains the hi-top incarnation of the classic American shoe. Hi Top. Posture Foundation Insole If it does not have a genuine Posture Foundation insole, it is not a PF. Originally patented in 1933, todays Posture Foundation insole continues to set the bar for comfort in classic sneakers. The diamond is a longstanding PF motif on many styles. It can be found embedded in outsoles, sculpted into foxing, printed on insoles and even embedded in the PF logo itself. The square, sport green PF heel patch, the most iconic and enduring of PF signals, is a symbol of style and play at its best.