Long Navy Blue Dress with Long Sleeves and Boat Neck in Cupro and Elastane This dress is knitted from 95% Cupro, a fiber known for its exceptional fluidity, softness, and luxurious feel. It includes 5% Elastane, which provides remarkable elasticity, allowing the garment to stretch and return to its original shape. Wear this dress throughout the season. Navy blue dress. Long sleeves. Cupro et Elastane.