Features: -Multi purpose footwear : pool . sea . beach . boat . surf . daycare . home . playground . gym . pilates . yoga . travel -Non-slip -Firm grip sole -Quick-drying -Breathable fabric -Light -Flexible -Comfortable -Easy to put on -Tailored with flat seams that limit friction and irritation -Reinforced toes Fabric: 91% polyamide / 9% elastane Size charts: 18 = 12,5 cm / 0-12 months 21 = 14,5 cm / 12-24 months 24 = 16,5 cm / 2-4 years 27 =18,5 cm / 4-6 years About the brand SLIPSTOP® slippers can follow you "almost" everywhere ... Designed for all age groups, these flexible slippers allow you to move comfortably and walk on different surfaces as if you were barefoot.