Weight-reducing clothing is clothing that players can wear that will reduce their weight. There are currently fourteen items that can be worn to reduce a player's weight. If a player wore the pieces of armour that offered the maximum weight reduction (Gold athlete's hat, Agile top, Agile legs, Boots of lightness, Penance gloves, and Wicked cape), that player would achieve the lowest possible weight of –40.8 kilograms.
Weight-reducing armour is very useful in skills and quests that involve a lot of running because run energy decreases relative to a player's weight (e.g. lower weight means less run energy depleted). Agility obstacles also have a greater chance of being completed if the player is lighter. Other weightless items exist and can be used without penalising a player's weight.
Items
Item Weight reduced (kg) Method to obtain Requirements 
Boots of lightness* 4.5 Found inside the Temple of Ikov. 
light source
Penance gloves 7 Bought with honour points at Barbarian Assault.(150 in each role) 40 
and high enough combat skills to play all roles at Barbarian Assault.
Spotted cape** 2.2 Made from Spotted kebbit fur by the Fancy-dress shop owner. 40
Spottier cape** 4.5 Made from Dashing kebbit fur by the Fancy-dress shop owner. 66
Wicked Cape 6 Obtained from Wizard Finix's Runespan shop for 2,500 points. 30
Agile legs 10 Complete 250 "perfect" laps of the advanced Gnome Stronghold agility course. Note: 85 Agility is not needed to equip, boosts allowed. 35
35
85 (can be obtained earlier with stat boosts such as agility potion, summer pies, etc.)
Wicked Robe Bottom 8 Obtained from Wizard Finix's Runespan shop for 7,500 points. 55
Agile top 12 Complete 250 "perfect" laps of the advanced Barbarian Outpost agility course. Note: 90 Agility is not needed to equip, boosts allowed. 35
35
90(can be obtained earlier with stat boosts such as agility potions, summer pies, etc.)
Wicked Robe Top 10 Obtained from Wizard Finix's Runespan shop for 15,000 points. 80
Gold athlete's hat 1.3 Obtained by spending 1500 contribution points at the Gielinor Games Obtaining enough contribution points at the Gielinor Games
Gold athlete's shirt 1.3 Obtained by spending 1500 contribution points at the Gielinor Games Obtaining enough contribution points at the Gielinor Games
Gold athlete's legs 1.3 Obtained by spending 1500 contribution points at the Gielinor Games Obtaining enough contribution points at the Gielinor Games
Gold athlete's shoes 1.3 Obtained by spending 1000 contribution points at the Gielinor Games Obtaining enough contribution points at the Gielinor Games
Gold athlete's gloves 1.3 Obtained by spending 1000 contribution points at the Gielinor Games Obtaining enough contribution points at the Gielinor Games
- Boots of lightness can be picked freely from ground, however, they're not tradeable.
** Both Hunter capes can be bought from Grand Exchange or other players, and worn after meeting the hunter requirement for said capes.
Release dates
- On 22 June 2009, extra weight-reducing equipment may be obtained from the advanced agility courses after completing a total of 250 'perfect' (i.e. without failing) laps.
- On 19 January 2010, the weight of Penance gloves was changed from -4.5 kg to -7 kg.
- On 30 April 2012, with the arrival of the Runespan, three weight-reducing pieces of armour were introduced, obtainable via purchasing from Wizard Finix's Runecrafting Shop.
- On 24 July 2012 the Gielinor Games went live and the Athletes sets was released. The bronze, silver and golden Atheletes set are all able to reduce weight when worn, making the bronze and silver sets the only weight-reducing equipment available for free to play. As the Gielinor Games event is over the suit cannot be obtained anymore.
Trivia
The lowest weight achievable is -40.8kg, which is helpful for times when long periods of running are required, like Penguin hunts, and during some quests. In addition it can be useful for moving ores, logs, and other heavy items you need to move in large bundles (e.g. during All fired up (minigame)). If you have an experience boosting set it may be a better choice for experience.
