SKU P00894821. Designer: The Sei. Material: 87% polyamide, 13% elastane. Care instructions: dry clean. Made in the USA. Designer color name: Peony. Two-piece set. Material II: 92% polyester, 8% elastane. Lining: 87% polyamide, 13% elastane. Shop The Sei Cocktail Dresses and the latest pink designer dresses for women now.