Length of delivery around 10 days didnt bother me but I didn't get a knock on door by delivery when antigen test kits in sub zero temperature when product says to be kept in storage at 4 to 30 degrees Celsius. Though checking every ten minutes at door product could have frozen I ten minutes. Justgolfstuff did not give any labeled instructions for the driver. I would give 4 or 5 stars for the 2x I have received masks from justgolfstuff for though no knock on door they could get cold with no negative effect on product. I would not want to order again even though I see antigen test kits are at about 30%less than I paid without assurance delivery would know to knock. There is someone here to receive product always.