Sidi Genius 6.6, carbon, size 45.5 (not mega). 2012, very little use. Sidi ad copy:
SIDI's adjustable heel tension device provides a secure and comfortable foot at the back of the foot, while two Velcro (R) straps at the forefoot provide lightweight, comfortable and reliable adjust-ability. The replaceable caliper buckle at the top provides easy on-the-bike adjustment and distributes pressure over a wide area.
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