The Skirmisher armour is an armour set won from Treasure Hunter. It consists of:
This armour has five tiers, and requires between 20 to 60 Defence to equip, depending on the tier. It can be recovered from Diango after being destroyed, but he does charge a fee for each piece, as they have combat stats.
The whole set weighs around 2kg, so it is a very lightweight option for rangers.
To change the tier of a piece of equipment, it must be in your inventory and not worn; then right-click it and select the Change option.