Product Feature Insulation Feature Double Cold Insulation,4 layers to keep clod.The bottle's insulation keeps your drinks cold, making it perfect for hot summer rides. Durable Material Crafted from high-quality plastic, this water bottle is designed to withstand the rigors of cycling. Large Capacity With a generous 610ML capacity, this cycling water bottle ensures you stay hydrated during long rides. Gradient Color Design The gradient color design adds a touch of style to your biking gear while being functional.