UPS Ground, UPS Next Day Air, and USPS are available shipping carriers. Please read below for restrictions.Orders containing Pawprint Oxygen Canisters must be shipped via UPS Ground due to federal regulations; they cannot be shipped with USPS or UPS Next Day Air. Orders for Pawprint Oxygen Canisters cannot be expedited due to federal shipping restrictions on oxygen.All other products, including oxygen concentrators, oxygen cages, pet oxygen masks, and regulators, may be shipped through UPS Ground, UPS Next Day Air, and USPS. The UPS Next Day Air option is available for an additional cost, and a quote can be provided by calling us at 855-699-4366.Orders placed Monday-Friday before 3:30PM EST will ship out the same day. Orders placed after 3:30PM EST will be shipped out the next business day. If you are ordering on a weekend, please note, your order will remain on hold until the next business day.