The Buff Original Child Fynch Multi. Original EcoStretch Multifunctional Neckwear Junior - Multifunctional neck neckwear for kids (4-12 years) designed with recycled materials. Comfortable, stretchable and featuring sun protection, the Original EcoStretch has plenty of possibilities. Multifunctional product designed for all-year-round use. Ideal protection against any weather conditions. Where ever your next adventures takes you, bring your BUFF® Original EcoStretch with you!