Velvet Pillow Collection

• Where do I find the batch number of the cushions of the Velvet collection?
• Can I also use the pillows from the Velvet collection outside?
• How do I clean the cushions from the Velvet collection?
• What is the weight of the cushions of the Velvet collection?
• What is the material of the cushions from the Velvet collection?
• What are the dimensions of the pillows from the Velvet collection?