Our large Superworms average around 1.5". Superworms are one of the most active feeder insects out there. We find even the pickiest of eaters love an excellent Superworm. All of our Superworms are raised on natural food. We do not use growth hormones, chemicals, or other synthetic food products while raising our Superworms. PLEASE READ: To Qualify for our awesome LIVE ARRIVAL GUARANTEE POLICY. You must either message us to have your order held for pickup at your local post office, or temperatures in your area(we go off zipcodes) need to be between 55F-85F. The extra mile - To ensure live arrival we may postpone or contact you to request an order be held for pickup.