From the website " Completely flat (zero-drop) – they allow for proper posture Breathable and very lightweight – you won't even feel them on your feet Incredibly flexible – your feet can finally move naturally Wide in the toes – the shoes don’t squeeze or pinch your toes Thin, abrasion-resistant sole – maximum sensory feedback and extra acupressure High-quality materials – shoes that will last a long time Fully functional shoes – you can ditch the burden of uncomfortable, hard footwear " Season: Spring, autumn Intended use: Daily wear Upper: Natural Suede Lining: Cozy, durable felt Sole: 6.5 mm Size: From 35EU to 47EU Weight: 190g (size 41) Flexibility: Highest Drop: 0.0mm (zero drop)