RT250301 is a winter-focused comfort insole combining natural wool warmth with soft latex cushioning. Designed for cold-weather footwear, everyday boots, outdoor shoes and casual winter styles, this model delivers a blend of insulation, breathability and gentle rebound suitable for a wide range of consumer markets.

The top surface is made from premium natural wool, providing excellent thermal insulation while remaining soft and comfortable against the foot. Wool fibers help retain warmth in low temperatures, wick away moisture and maintain a dry, cozy environment inside the shoe—key advantages for winter comfort products.

Beneath the wool layer is a latex cushioning base, selected for its soft rebound, flexibility and long-lasting resilience. Latex conforms naturally to the foot’s shape while providing gentle support and shock absorption, making it ideal for users seeking all-day comfort during winter activities. Its elasticity allows the insole to adapt smoothly to walking motion, reducing pressure on the heel and forefoot.

To improve ventilation and reduce moisture buildup, the latex layer includes perforated channels across the forefoot. These perforations allow air circulation, helping the insole remain fresher and more breathable compared to fully solid winter inserts.