The One Bourdon Sham is crafted from crisp and cool cotton percale embellished with a distinctive one-line embroidered border. 100% Cotton. **Please note cotton percale has a crisp, cool feel, and does not have the silky soft hand of cotton sateen. If you prefer silky soft sheets, we recommend cotton sateen. The One Bourdon Sham is crafted from crisp and cool cotton percale embellished with a distinctive one-line embroidery.