Long before smartphones took over, CDs, wired headphones, chunky cellphones, and computer keyboards were part of everyday life. size? is tapping into that era for its latest Crocs collaboration, using the new Echo II as the base for a colorful design filled with throwback tech references.

The size? x Crocs Echo II comes covered in metallic green Croslite with larger ventilation openings throughout the upper. Royal blue lands on the LiteRide footbed and TPU support through the midfoot, while yellow shows through the channels underneath. A hot pink adjustable heel strap breaks up the green upper, with size? branding printed across the silicone section at the back.

Most of the theme comes through the Jibbitz made for the pair. A CD and Esc keyboard key are joined by a pink cellphone modeled after the Nokia 3310, including a green screen with size? and Crocs branding. There is also a small size? pouch made to hold wired headphones, another detail pulled straight from the pre-smartphone era.

The size? x Crocs Echo II releases October 1, 2026, through size? online and at select stores.

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