100 bespectacled guards put on uniform for training (7,7)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

C (100, in Roman numerals) IN GLASSES (“bespectacled”) put EVEN (“uniform”) Not keen on this, as the IN is required as part of the solution, but also to indicate the placement of the C inside GLASSES, so is doing double duty.