Product name: bird cage swing cover Material Silver-coated Oxford cloth Use rain and sun protection style Applicable object swing Product size: Single 190*115cm(75"*45"), Double 232*203cm(91"*80") Gross weight and net weight: 190T: single 0.4kg, double 0.5kg, 210D: single 0.7kg, double 0.75kg Product description: This product is made of 190T or 210D polyester taffeta waterproof and silver-coated fabric, which can prevent snow and frost in winter, sunscreen and shade in summer, and can prevent falling leaves from causing trouble to us in autumn. Simple installation, light weight, easy to fold and carry. Small knowledge of fabrics: the difference between T and D, T represents the density of the yarn, the larger the T number, the denser the yarn. T--The T in the fabric, generally refers to polyester taffeta, is a nylon, silk-like fabric, generally used as the outer and inner tents of tents, light and strong, such as the numbers in front of 170T, 190T, 210T It means the sum of the number of warp and weft yarns (density) in 1 inch (2.545CM), which is actually a density unit. You can also simply think that the larger the number before T, the heavier the fabric of the same area. D represents the thickness of the yarn, the larger the D number, the thicker the yarn. The larger the number before D, the heavier the cloth of the same area, such as 210D, 300D, 420D, 600D Oxford cloth.