I have one major criteria in a day sporran and that is usefulness. It is after all a pocket so must be able to accommodate all the things I wish to have with me during the day. The "hard" leather sporrans often sold do not meet this criteria. A day sporran should be soft, preferably brown, and able to expand when I start stuffing things into it.

My elk skin falconers bag meets my needs and is my favorite day sporran.