Smiffys Adult Female Size Guide. Smiffys Adult Male Size Guide. Size: UK Size 16-18 (L). Note: Sizes are approximate and intended as a guide only, as fit can vary by style, fabric and manufacturer. Small 8-10 34.5-35.5" / 88-90cm 26.5-27.5" / 67-70cm 37-38" / 94-97cm.
