What's a mesh?
Hucci group gifts
Since July, Second Life allows the use of meshes which are objects like sculpts or prims. The difference, as you can see in this photos, is that cloth meshes adapts to the body of the avatar while it moves, which means, for instance, no more trouble editing skirts when sitting!
Though, there are too many problems in the implementation of meshes yet. Meshes can only be used in mesh enabled sims and with a special viewer that supports meshes. SL old viewer and 2.0 don't allow users to see meshes. You'll need to download, for example, the "Project Viewer - Meshes"
For useful information check out the Volunteers Group about the subject.
These examples are clothing meshes from Hucci group gifts.
Dress: ::HH:: Hucci Tripple Ruffle Mesh Dress V2- Gift
Clutch: .:StoRin:. - Luna Clutch *black*
Head accessory: *GF* Rose Hat -black-
Earrings#1: [ glow ] studio ~~DeLyn~~ GLOW earrings
Pumps#1: Maitreya Verve Black
Jumpsuit: ::HH:: Hucci Eau de Hucci Mesh Jumpsuit
Bag: -LMK- Leather hold-all bag (Navy blue)
Earrings#2: [ glow ] studio - Glamour Earrings (gold)
Pumps#2: (Shiny Things) Delphine pumps - gold
Hair: Maitreya Dylan - Browns Pack
Skin: Amacci ~ Katie Skin (Fair) -03 Fresh