Chest: Measure around the fullest part of your chest, keeping the tape parallel to the floor. Ensure the tape is snug but not tight.

Stomach: Measure around the widest part of your stomach, typically around the navel.

Shoulders: Measure across the back from the edge of one shoulder to the edge of the other. Make sure the tape is parallel to the floor.

Sleeve: Measure from the edge of your shoulder to your wrist, allowing the tape to follow the natural curve of your arm.

Jacket Length: Measure from the top of your shoulder, near the base of your neck, straight down to where you want the jacket to end. Typically, this is around the middle of the buttocks.

Seat: Measure around the fullest part of your hips and buttocks while standing. Keep the tape measure parallel to the floor and snug but not tight.

Waist: Bend to the side to find your natural waist. Measure this area, keeping the tape slightly loose. This is typically where you wear your trousers.

Outseam: Measure from the top of your waistband, along the outer side of your leg, down to the desired length of the trousers. This is typically to the bottom of the ankle or where you prefer the trousers to end.