Kocotree KK Tree Kids Cooling UV Protection Sleeves Original Yarn Sun Protection Boys Girls Ice Silk Arm Sleeves Anti-UV Baby Arm Covers

UPF 50+ sun protection with proven durability after 1000 washes

Original KK yarn developed under Nobel Prize scientist guidance

High elasticity and breathable fabric for comfortable long-term wear without tightness

Incorporates cooling factors for rapid heat dissipation and refreshing feel

Antibacterial properties rated 7A, exceeding national standards, effective after 1000 washes

Water-wash resistant withstanding 1000 cycles without loss of function

UVA blocking rate less than 1%

Heat shielding rate of 43.8%, reducing skin temperature by up to 9.87°C

Four-way stretch design with ergonomic wide-to-narrow cuffs for secure fit and freedom of movement

High-quality digital printing with UV color-changing labels for authenticity

Durable and resistant to snagging, suitable for machine washing

Meets infant safety standards (Class A), free from harmful chemicals and odors

Suitable for multiple outdoor activities including ball sports, running, cycling, hiking, water parks, and island travel

Machine washable, retains sun protection, cooling, and antibacterial functions after repeated washing

Recommended for children’s outdoor use to protect against UV exposure and heat

Kocotree (KK Tree) is dedicated to children’s outdoor apparel with 16 years of research and development. The brand encourages children to explore nature freely and creatively, combining innovative technology with child-friendly design to provide functional, comfortable, and safe products for young adventurers.

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