Product Name: GobUnion Hallux Socks with Built-in Toe Separator - Size 39-42 Preventive against hallux, bunion, big toe curvature Relieves pain by separating and stretching the big toe Soft gel toe spreader works immediately Very comfortable to wear, not visible from the outside Machine washable at 30 °C on a gentle cycle 100% biodegradable One size fits shoe sizes 39-42 No slipping environmentally friendly Does not leave oils when you sweat or wash medical device Relief on both joints 70% cotton content High wearing comfort