diff --git a/content/guns.toml b/content/guns.toml
index fba050a..30ecf15 100644
--- a/content/guns.toml
+++ b/content/guns.toml
@@ -1,5 +1,7 @@
 [gun."blaster"]
 
+space.weapon = 10
+
 # Angle of fire cone
 # Smaller angle = more accurate
 spread = 2
diff --git a/content/outfits.toml b/content/outfits.toml
index d44b79a..69452bc 100644
--- a/content/outfits.toml
+++ b/content/outfits.toml
@@ -1,4 +1,7 @@
 [outfit."plasma engines"]
+
+space.engine = 20
+
 engine.thrust = 100
 engine.flare_texture = "flare::ion"
 steering.power = 20
diff --git a/content/ship.toml b/content/ship.toml
index a68c534..0073436 100644
--- a/content/ship.toml
+++ b/content/ship.toml
@@ -6,6 +6,11 @@ hull = 200
 linear_drag = 0.2
 angular_drag = 0.2
 
+
+space.outfit = 200
+space.engine = 50
+space.weapon = 50
+
 engines = [{ x = 0.0, y = -1.05, size = 50.0 }]
 guns = [{ x = 0.0, y = 1 }, { x = 0.1, y = 0.80 }, { x = -0.1, y = 0.80 }]
 
diff --git a/crates/content/src/lib.rs b/crates/content/src/lib.rs
index cb255ea..7c10a90 100644
--- a/crates/content/src/lib.rs
+++ b/crates/content/src/lib.rs
@@ -18,7 +18,9 @@ use toml;
 use walkdir::WalkDir;
 
 pub use handle::{FactionHandle, TextureHandle};
-pub use part::{EnginePoint, Faction, Gun, GunPoint, Outfit, Relationship, Ship, System, Texture};
+pub use part::{
+	EnginePoint, Faction, Gun, GunPoint, Outfit, OutfitSpace, Relationship, Ship, System, Texture,
+};
 
 mod syntax {
 	use anyhow::{bail, Result};
diff --git a/crates/content/src/part/gun.rs b/crates/content/src/part/gun.rs
index 07a082b..72a0093 100644
--- a/crates/content/src/part/gun.rs
+++ b/crates/content/src/part/gun.rs
@@ -5,7 +5,10 @@ use cgmath::Deg;
 
 use crate::{handle::TextureHandle, Content};
 
+use super::OutfitSpace;
+
 pub(crate) mod syntax {
+	use super::super::shared;
 	use serde::Deserialize;
 	// Raw serde syntax structs.
 	// These are never seen by code outside this crate.
@@ -16,6 +19,7 @@ pub(crate) mod syntax {
 		pub spread: f32,
 		pub rate: f32,
 		pub rate_rng: f32,
+		pub space: shared::syntax::OutfitSpace,
 	}
 
 	#[derive(Debug, Deserialize)]
@@ -53,6 +57,9 @@ pub struct Gun {
 	/// Random variation of projectile delay, in seconds.
 	/// Each shot waits (rate += rate_rng).
 	pub rate_rng: f32,
+
+	/// How much space this gun uses
+	pub space: OutfitSpace,
 }
 
 /// Represents a projectile that a [`Gun`] produces.
@@ -98,6 +105,7 @@ impl crate::Build for Gun {
 
 			ct.guns.push(Self {
 				name: gun_name,
+				space: gun.space.into(),
 				spread: Deg(gun.spread),
 				rate: gun.rate,
 				rate_rng: gun.rate_rng,
diff --git a/crates/content/src/part/mod.rs b/crates/content/src/part/mod.rs
index 62b35c9..3105ee8 100644
--- a/crates/content/src/part/mod.rs
+++ b/crates/content/src/part/mod.rs
@@ -3,6 +3,7 @@
 pub mod faction;
 pub mod gun;
 pub mod outfit;
+mod shared;
 pub mod ship;
 pub mod system;
 pub mod texture;
@@ -10,6 +11,7 @@ pub mod texture;
 pub use faction::{Faction, Relationship};
 pub use gun::{Gun, Projectile};
 pub use outfit::Outfit;
+pub use shared::OutfitSpace;
 pub use ship::{EnginePoint, GunPoint, Ship};
 pub use system::{Object, System};
 pub use texture::Texture;
diff --git a/crates/content/src/part/outfit.rs b/crates/content/src/part/outfit.rs
index bda600d..f1ddf60 100644
--- a/crates/content/src/part/outfit.rs
+++ b/crates/content/src/part/outfit.rs
@@ -4,7 +4,10 @@ use anyhow::{bail, Result};
 
 use crate::{handle::TextureHandle, Content};
 
+use super::OutfitSpace;
+
 pub(crate) mod syntax {
+	use super::super::shared;
 	use serde::Deserialize;
 	// Raw serde syntax structs.
 	// These are never seen by code outside this crate.
@@ -13,6 +16,7 @@ pub(crate) mod syntax {
 	pub struct Outfit {
 		pub engine: Option<Engine>,
 		pub steering: Option<Steering>,
+		pub space: shared::syntax::OutfitSpace,
 	}
 
 	#[derive(Debug, Deserialize)]
@@ -43,6 +47,9 @@ pub struct Outfit {
 	/// Its location and size is determined by a ship's
 	/// engine points.
 	pub engine_flare_texture: Option<TextureHandle>,
+
+	/// How much space this outfit requires
+	pub space: OutfitSpace,
 }
 
 impl crate::Build for Outfit {
@@ -55,6 +62,7 @@ impl crate::Build for Outfit {
 				engine_thrust: 0.0,
 				steer_power: 0.0,
 				engine_flare_texture: None,
+				space: OutfitSpace::from(outfit.space),
 			};
 
 			// Engine stats
diff --git a/crates/content/src/part/shared.rs b/crates/content/src/part/shared.rs
new file mode 100644
index 0000000..70036eb
--- /dev/null
+++ b/crates/content/src/part/shared.rs
@@ -0,0 +1,67 @@
+pub(crate) mod syntax {
+	use serde::Deserialize;
+
+	#[derive(Debug, Deserialize)]
+	pub struct OutfitSpace {
+		pub outfit: Option<u32>,
+		pub weapon: Option<u32>,
+		pub engine: Option<u32>,
+	}
+}
+
+/// Represents outfit space, either that available in a ship
+/// or that used by an outfit.
+#[derive(Debug, Clone, Copy)]
+pub struct OutfitSpace {
+	/// Total available outfit space.
+	/// This should be greater than weapon and engine.
+	pub outfit: u32,
+
+	/// Space for weapons
+	pub weapon: u32,
+
+	/// Space for engine
+	pub engine: u32,
+}
+
+impl OutfitSpace {
+	/// Make a new, zero OutfitSpace
+	pub fn new() -> Self {
+		Self {
+			outfit: 0,
+			weapon: 0,
+			engine: 0,
+		}
+	}
+
+	/// Does this outfit contain `smaller`?
+	pub fn can_contain(&self, smaller: Self) -> bool {
+		self.outfit >= (smaller.outfit + smaller.weapon + smaller.engine)
+			&& self.weapon >= smaller.weapon
+			&& self.engine >= smaller.engine
+	}
+
+	/// Free outfit space
+	pub fn free(&mut self, rhs: &Self) {
+		self.outfit += rhs.outfit + rhs.weapon + rhs.engine;
+		self.weapon += rhs.weapon;
+		self.engine += rhs.engine;
+	}
+
+	/// Occupy outfit space
+	pub fn occupy(&mut self, rhs: &Self) {
+		self.outfit -= rhs.outfit + rhs.weapon + rhs.engine;
+		self.weapon -= rhs.weapon;
+		self.engine -= rhs.engine;
+	}
+}
+
+impl From<syntax::OutfitSpace> for OutfitSpace {
+	fn from(value: syntax::OutfitSpace) -> Self {
+		Self {
+			outfit: value.outfit.unwrap_or(0),
+			engine: value.engine.unwrap_or(0),
+			weapon: value.weapon.unwrap_or(0),
+		}
+	}
+}
diff --git a/crates/content/src/part/ship.rs b/crates/content/src/part/ship.rs
index 8506a4a..2b95831 100644
--- a/crates/content/src/part/ship.rs
+++ b/crates/content/src/part/ship.rs
@@ -6,8 +6,12 @@ use nalgebra::{point, Point};
 
 use crate::{handle::TextureHandle, Content};
 
+use super::OutfitSpace;
+
 pub(crate) mod syntax {
+	use super::super::shared;
 	use serde::Deserialize;
+
 	// Raw serde syntax structs.
 	// These are never seen by code outside this crate.
 
@@ -22,6 +26,7 @@ pub(crate) mod syntax {
 		pub collision: Collision,
 		pub angular_drag: f32,
 		pub linear_drag: f32,
+		pub space: shared::syntax::OutfitSpace,
 	}
 
 	#[derive(Debug, Deserialize)]
@@ -86,6 +91,9 @@ pub struct Ship {
 
 	/// Reduction in velocity over time
 	pub linear_drag: f32,
+
+	/// Outfit space in this ship
+	pub space: OutfitSpace,
 }
 
 /// Collision shape for this ship
@@ -138,6 +146,7 @@ impl crate::Build for Ship {
 				name: ship_name,
 				sprite_texture: th,
 				mass: ship.mass,
+				space: OutfitSpace::from(ship.space),
 				angular_drag: ship.angular_drag,
 				linear_drag: ship.linear_drag,
 				size,
diff --git a/src/game/game.rs b/src/game/game.rs
index 35f9a81..eda9485 100644
--- a/src/game/game.rs
+++ b/src/game/game.rs
@@ -53,7 +53,6 @@ impl Game {
 		let mut o2 = outfits::ShipOutfits::new(&ct.ships[0]);
 		o2.add(ct.outfits[0].clone());
 		o2.add_gun(ct.guns[0].clone());
-		println!("{:?}", o2);
 		let h3 = physics.add_ship(
 			&ct.ships[0],
 			o2,
diff --git a/src/game/outfits.rs b/src/game/outfits.rs
index 981a7d3..ff3283c 100644
--- a/src/game/outfits.rs
+++ b/src/game/outfits.rs
@@ -1,5 +1,5 @@
 use cgmath::{Deg, Point3};
-use content::TextureHandle;
+use content::{OutfitSpace, TextureHandle};
 
 use crate::{content, render::SubSprite};
 
@@ -67,6 +67,9 @@ impl OutfitStatSum {
 #[derive(Debug)]
 pub struct ShipOutfits {
 	pub stats: OutfitStatSum,
+	pub total_space: OutfitSpace,
+
+	available_space: OutfitSpace,
 	outfits: Vec<content::Outfit>,
 	guns: Vec<ShipGun>,
 	enginepoints: Vec<content::EnginePoint>,
@@ -83,16 +86,30 @@ impl<'a> ShipOutfits {
 			stats: OutfitStatSum::new(),
 			outfits: Vec::new(),
 			guns: Vec::new(),
+			available_space: content.space.clone(),
+			total_space: content.space.clone(),
 			enginepoints: content.engines.clone(),
 			gunpoints: content.guns.clone(),
 			engine_flare_sprites: vec![],
 		}
 	}
 
+	/// Does this outfit set contain the specified outfit?
+	pub fn contains_outfit(&self, o: &content::Outfit) -> bool {
+		match self.outfits.iter().position(|x| x.name == o.name) {
+			Some(_) => true,
+			None => false,
+		}
+	}
+
 	/// Add an outfit to this ship.
 	/// Returns true on success, and false on failure
 	/// TODO: failure reason enum
 	pub fn add(&mut self, o: content::Outfit) -> bool {
+		if !self.available_space.can_contain(o.space) {
+			return false;
+		}
+		self.available_space.occupy(&o.space);
 		self.stats.add(&o);
 		self.outfits.push(o);
 		self.update_engine_flares();
@@ -100,10 +117,13 @@ impl<'a> ShipOutfits {
 	}
 
 	/// TODO: is outfit in set?
-	/// TODO: don't remove nonexisting outfit
 	pub fn remove(&mut self, o: content::Outfit) {
-		self.outfits
-			.remove(self.outfits.iter().position(|x| x.name == o.name).unwrap());
+		let i = match self.outfits.iter().position(|x| x.name == o.name) {
+			Some(i) => i,
+			None => panic!("Removed non-existing outfit"),
+		};
+		self.available_space.free(&o.space);
+		self.outfits.remove(i);
 		self.stats.remove(&o);
 		self.update_engine_flares();
 	}