In Pokémon Mystery Dungeon, there are Scarves that increase Stats or make the Pokémon immune to certain Status conditions when held. These are sometimes known as Bands.

Lists

Bands/Scarves that Prevent Status Conditions

Pecha Scarf

A hold item that prevents the Pokémon from being poisoned or badly poisoned

Persim Band

A hold item that prevents the Pokémon from becoming confused.

No-Stick Cap

A hold item that prevents the Pokémon's items from becoming sitcky and gummed up.

Weather Band

A hold item that prevents the Pokémon from feeling the effects of the weather.

Loud Band

Sleep effects end earlier.

Bands/Scarves that promote Stats

Def. Scarf

A hold item that boosts the Pokémon's Defense.

Special Band

A hold item that boosts the Pokémon's Special Attack.

Power Band

A hold item that boosts the Pokémon's Attack.

Zinc Band

A hold item that boosts the Pokémon's Special Defense.

Detect Band

Raises evasiveness.

Munchlax Band

Raises Attack and Special Attack, but wearer gets hungry faster.

Twist Band

Prevents Attack and Special Attack from being lowered.

Other Bands/Scarves

Pass Scarf

A hold item that can enable the Pokémon to pass off the effect of attacks and certain kinds of hostile moves to a Pokémon next to it. However, it also makes the Pokémon's Belly go down.

Bounce Band

A hold item that makes thrown items bounce off the Pokémon.

Heal Ribbon

A hold item that speeds up the Pokémon's natural HP regeneration. The Pokémon's Belly will go down faster, however.

Joy Ribbon

A hold item that earns the Pokémon Exp. Points when taking damage

Customer Scarf

Pokémon hurt by confused party members will experience drop in hunger rather than in HP.

Stealth Scarf

Prevents sleeping wild Pokémon from awakening.

Substitute Scarf

Prevents user from being damaged by tossed items.

Trap-evade Scarf

Wearer is immune from traps.

Warp Scarf

Wearer randomly warps around the map.

Free Ribbon

No Effect.

Friend Ribbon

Increases chance of recruiting wild Pokémon when held by leader.

Golden Ribbon

No effect, but sells for high price.

Hunger Ribbon

Hunger decreases faster when eating food.

Lucky Ribbon

Wearer gains experience when damaged.

Restore Ribbon

In creases healing and hunger.

Stamina Ribbon

Hunger decreases more slowly.

Curve Bandana

Tossed items can take a curved path

Through Bandana

Tossed items continue through foes.

Stern Band

Hunger depletes slower, but doesn't work in walls.

Sticky Headband

Prevents items from becoming Sticky.

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