袖 is a Japanese kanji written with 10 strokes, listed here under the keyword “sleeve”. It is built from 由 (wherefore) and 衤 (cloak). In Remembering the Kanji by James W. Heisig it is frame 1189.
On KumiJi Glyph Explorer, open the parts search and type “wherefore” + “cloak”. 袖 is among the results, together with every other character containing the same shapes.
Open 袖 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.