How do I solve 23 across in Times Cryptic 29569?

Question

Accepted Answer

23 across reads "Functional uniform with expensive fur" (6 letters); the answer is USABLE. It's a charade: the answer breaks into parts in clue order, each part clued by a word or short phrase. No indicators needed; watch for standard abbreviations (RA = artist, US = American, IN = at home) and short synonyms. The full step-by-step breakdown is on this page.

Functional uniform with expensive fur (6)

23A — Functional uniform with expensive fur (6) — USABLE