Your hunting experience just got better, as you can now open chests to collect three Hunter themed outfits and combine them to make the elite Volcanic Trapper outfit. They’ll be available on Treasure Hunter 00:00 UTC on 23rd August to 23:59 UTC on 28th August, so complete your set while you can!
How do I get the outfits?

Similarly to previous versions of the elite skilling outfits, there are three five-piece tradeable outfits to collect over this week:

    Desert Trapper Outfit
    Jungle Trapper Outfit
    Arctic Trapper Outfit

One outfit will be available on each of the first three days, so check back to get a different one. All outfits will be available for the final three days.

Equivalent pieces the three outfits can be combined into pieces of the elite version: The Volcanic Trapper outfit. Besides being a sharp look, it also gives you a range of amazing benefits for your Hunter training.
What are the benefits?

Wear five matching pieces of any of the basic outfits to enjoy the following:

    5% increase to hunting success rate
    Auto-reapplying of Juju Hunter potion in Herblore Habitat
    Increased chance of rarer charm sprites Yaktwee
    3 daily teleports to Hunter locations

Wearing the elite Volcanic Trapper outfit in its entirety gives an expanded list of benefits:

    7% increase to hunting success rate
    10% chance of double loot
    Can deploy an extra trap (maximum of 6)
    Increased conversion rate for Big Chinchompa reward points
    Chance to instantly deploy/pick up traps
    Chance of double loot implings (3 per day)
    Works as a hunter's catalyst fragment if owned
    Auto-reapplying of Juju Hunter potion in Herblore Habitat
    Increased chance of rarer charm sprites Yaktwee
    5 daily teleports to hunter locations

Note that any of the four outfits above will also confer the benefits of the base Hunter’s outfit, if owned.

Keep in mind that any updates the past 6 months that affect your Hunter training won’t be useable with the Trapper outfits until 6 months after their release. For example, teleports to crystal skillchompas and plover birds will only appear 6 months after their respective release dates.
Enjoy!

If these were the benefits increasing outfits you’ve been hunting for all your life, this is your lucky week. Have fun!