The Compound Monte Carlo C1 is the first sneaker made from genuine motorsport race tyre rubber. Designed in the UK and handcrafted in Portugal, its re-engineered outsole features tyres raced by iconic teams like Ferrari, Mercedes, and McLaren, blended with recycled TPU for performance and sustainability.SIZING (UNISEX): To make sure your Compound's fit like a glove, we recommend you follow our three-step guide below and adjust your size in accordance with our UK MENS sizing chart. https://www.compoundfootwear.com/sizechart If you are still unsure, please email [email protected], and our team will be sure to help you. Material description: Re-engineered motorsport tyre rubber outsole Premium Italian suede & supercar-grade leather uppers Blended with recycled TPU for performance & sustainability Exclusive F1 carbon fibre swing tag (first 100 pairs) Handcrafted in Portugal, designed in the UK Step into the future of footwear—where luxury meets sustainability.