The Extender accessory is perfectly compatible with the Sidekick, enabling the Sidekick’s waist/crossbody strap to be lengthened by up to 15". Simply attach the Extender seamlessly to the Sidekick's existing buckles, and adjust the length for an optimal fit. 

The Black Extender matches perfectly with the Black Sidekick. 

The Olive Extender matches perfectly with the Olive Sidekick and the Navy Sidekick.