SENSO Petra II Heel in Black. - size 36 (also in 37) SENSO Petra II Heel in Black. - size 36 (also in 37) Croc embossed leather upper with man made sole. Slip-on styling. Heel measures approx 2.5 H. SENS-WZ159. PETRA II. This Sydney-based, family-run company offers a range of fashion-forward footwear, specifically targeting wedges. For anyone seeking shoes that make a statement, look no further than SENSO DIFFUSION and their often bright, super tall, and always edgy footwear.