Bags and bag assemblies

A bag assembly, comprising:

• a first bag comprising:
• a top surface, a bottom surface, a front surface, a back surface, and a plurality of side surfaces arranged to form an enclosed interior region for storing items or equipment within the first bag;
• a first protective cover extending along the back surface of the first bag;
• a first handle assembly comprising a first handle and a first plurality of support members attached to the first handle, wherein the first handle assembly is positioned (i) external to the enclosed interior region of the first bag and (ii) between the first protective cover and the back surface of the first bag so that the first handle assembly is retractable into a partially enclosed region provided between the first protective cover and the back surface of the first bag;
• and
• a first connector assembly comprising a first external strap with a single connecting fastener attached to the first external strap, wherein the connecting fastener is positionable or securable along the front surface of the first bag;
• and
• a second bag with a greater length, height, and/or width than the first bag or a larger storage volume than the first bag, the second bag comprising:
• a top surface, a bottom surface, a front surface, a back surface, and a plurality of side surfaces arranged to form an enclosed interior region for storing items or equipment within the second bag;
• a second protective cover extending along the back surface of the second bag;
• a second handle assembly comprising a second handle and a second plurality of support members attached to the second handle, wherein the second handle assembly is positioned (i) external to the enclosed interior region of the second bag and (ii) between the second protective cover and the back surface of the second bag so that the second handle assembly is retractable into a partially enclosed region formed between the second protective cover and the back surface of the second bag;
• and
• a second connector assembly with a different configuration or arrangement of connectors than the first connector assembly, the second connector assembly comprising a second external strap with a first fastener and a second fastener attached to the second external strap, wherein the first fastener is provided along the top surface of the second bag and the second fastener is positionable or securable along the front surface of the second bag, wherein the first fastener is configured to engage the connecting fastener attached to the first external strap of the first bag,
• wherein the first external strap is configured to extend under the second handle and between the second plurality of support members to facilitate a coupling between the connecting fastener of the first bag and the first fastener of the second bag,
• wherein the first bag and/or the second bag comprises a spinner luggage bag.