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A wide range of temperatures combined with the seamless comfort of the most versatile Castelli sleeve. Medium weight seamless sleeve Surprisingly warm without causing overheating. Polyester / Nylon / Lycra 78% /15% / 7% Completely seamless construction. Folds up and becomes very small. To report an issue with this product, click here. To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.





