- 81% Recycled Nylon, 19% Elastane - Full Piece - Scooped Neck - Cross Back Straps - Crystal Embellishment The Sisi Society Kids Round Neck One Piece is made for all-day adventure, with full body coverage, crossed straps, and sparkling embellishments. The print is inspired by the frescoes in the Bergl Rooms of Hofburg Palace in Vienna. A dreamlike landscape realised in lilac hues is glimpsed through ornate frames, lush botanicals, and painted coral birdlife.