Use: Decorative, Shape: Square, Age Group: Adults, Filling: Hollow Fiber, Filling: Microfiber, Material: 100% Polyester, Nonwoven throw cushion pillow insert for decorative pillow Size 18 " square appr. 45 cm Please indicate the weight alternative weights Minimum weight: 450- 500 g Should not be too light. Some kind of back support would be nice. Thank you