REI Taped Mitt.
Full featured, so ~5oz for the pair, IIRC. I can weigh them later today when I’m home, if you want.
You can remove some of the “features” to save weight, but then you loose some functionality – like either cinching wrist tighter (could replace with a lighter method), or the gauntlets closed (though the mitts two single-handed pulls per mitt is perhaps overkill and could be replaced with a lighter alternative). You could also remove the “kiddie” keeper straps if you desire – these cinch to your wrist or forearms and permit you to pull a mitt off and have it dangle from your forearm or wrist while you perform some operation that requires more dexterity than the mitt provides and you won’t drop/lose your mitt.
Nice mitts. I like them.