We manufacture each product with care, therefore, some orders may take more than 4 business days. And so if item(s) are out of stock, we are carefully preparing them just for you. In case your order takes more than 4 business days, it’s usually because our production team is doing their best to process and ship your order. It might take up to 10 business days maximum. Also, it depends on the volume of orders we receive every day. (excluding holidays, Saturdays, and Sundays) and COVID-19 is affecting our processing time.