There's three ways that a jacket can be closed:
1 Zip.
2 A flap or flaps on the outside with Velcro.
3 A flap or flaps on the outside with studs.
Zips are nearly universal. How heavy does the zip have to be to be functional?
The zip often has outside flaps to keep out water. Is it best to have Velcro or studs on the outside flap/s? If Velcro, should this be a continuous strip (keeps out water better) or with small gaps (easier to undo)? Some jackets have a single inside flap with no Velcro or studs. Does this flap serve any purpose?
TIA