Accessory units for consumer electronic devices and related assemblies and methods

An accessory unit for an electronic device, comprising:

• a front flap;
• and
• a rear cover coupled with the front flap such that the front flap pivots between an open state and a closed state with respect to the rear cover, the rear cover comprising:
• a recessed portion formed from a flexible material that defines a chamber,
• a frame coupled to the recessed portion, the frame defining an opening of the chamber configured to receive the electronic device, wherein the frame comprises a material that is more rigid than the flexible material of the recessed portion, wherein the frame is defined by a multi-sided cross-section which includes a top wall and an engagement wall, the top wall generally parallel with the front flap when the front flap is in the closed state, wherein the engagement wall extends within the chamber and is non-parallel with respect to the top wall, wherein the engagement wall engages with a perimeter portion of the electronic device when the electronic device is retained within the chamber, and
• an end region coupled to the front flap and the rear cover, the end region comprising an end segment which provides stiffness to the end region and maintains alignment of the front flap with respect to the rear cover, the end segment extending across only a portion of a full width of the end region.