Systems and apparatuses for protecting continuous glucose monitoring and insulin infusion devices

Systems and apparatuses for securing and protecting diabetes management devices, such as continuous glucose monitoring (CGM) devices and insulin infusion sets. An apparatus comprises a base having multiple pairs of arms which can be attached to a band. The apparatus also comprises a shell for retaining a diabetes management device and which may be unitarily formed with, or removably attached to, the base. A system may include an apparatus, a diabetes management device retained in the shell of the apparatus, and a band attached to the base of the apparatus. The band may be placed around a body part of a user, such as an arm or the abdomen. A system can include an adhesive patch which can adhere to the shell of an apparatus and which has an adhesive layer overlaid with multiple liners having cutlines formed therebetween.