The T4 phage earrings are very comfortable, not heavy at all. I don't notice them until their heads brush against my neck... or catch on a scarf or sweater. (The collar whiskers are blunt but snaggy, easily dealt with if you're mindful of it.) (Dear Reader, I was not initially mindful.) I'm very pleased with them, and may have to get the necklace as well. A very fun find.