Almost every sae-aelfen has wings. You can make a character without wings, but come on they're fun. Every set of wings is a semi-transparent set of insect wings. When I say insect I mean everything but butterflies. Things like bees, cicadas, dragonflies, etc. The ones I drew are a sampling but you can find tons on google. These are used to assist with swimming. Sometimes they're painted or decorated with various things for celebrations or to show status. Have fun and be creative! There are a lot of options out there if you look around. TL;DR: It's one paragraph fam just read it