PVC box or customize packaging: Samples for you arrive based on sample flexibility and deposit installment. Bulk lead time is 15 days after sample approval and deposit payment. Delivery Clause: FOB Shenzhen or EXW. Payment terms: T T,L C, PayPal, Express: DHL, UPS, FedEx, TNT, EMS etc. Silicone is a natural material, the density above the average person’s average plastic, isn’t exactly clear plastic. It’s more ecological, more flexible, more durable.