Edress 4 Bone Full Hoop Bridal Crinoline Petticoat Skirt Slip Ruffles 4 hoop; Hoop diameter: 94cm/37inch; The hoops are made of very flexible light-weight thin metal covered with protector which are removable and can be easily adjusted to Decrease or Increase the Fullness of the Slip Elasticity Waist 4 Hoop 5 Ruffles