Original EcoStretch Elsa 2 - Frozen Original EcoStretch Multifunctional Tubular Kids. Multifunctional Frozen neck tubular for kids (4-12 years) designed with recycled materials. Comfortable, stretchable and featuring sun protection, the Original EcoStretch Frozen neck tubular for Kids has plenty of possibilities. Multifunctional product designed for all-year-round use. Ideal protection against the cold during high intensity outdoor activities such as trail running, trekking, bouldering, hiking, horse riding or cycling. Design: Frozen. Designed for kids (4-12 years). Suitable for an all year base layer use. All year versatility. UltraStretch technology: highly stretchable product designed for top comfort and performance. Specifically designed for children: designs, sizes and technology focused on the comfort and protection of the youngest ones.