Pit and workshop kit is sized on the same ladders as driver kit, so if you already know your race suit or glove size you know this too. The one thing to watch is that overalls come in two systems: Sparco use letters and OMP use the numeric ladder.
Overalls
Sparco MS-4 and MS-5, and the Proban suitLetters, XS to XXL.▼
These are the bands from Sparco’s own body size chart, which is what their letters follow. The OMP Proban race suit is also sold S to XXL and uses the same pattern.
OMP Summer and Blast EvoNumeric, 44 to 64. The same ladder as OMP race suits.▼
Mechanics overalls are meant to be roomierUnlike a race suit, you want room to crouch, reach and kneel in these all day. If you are between two sizes take the larger one, which is the opposite of the advice for a driving suit.
Gloves
Measure around your knuckles, across the widest part of the palm, leaving the thumb out.
Sparco and OMP agree within half a centimetre throughout. A mechanics glove should be a little looser than a driving glove so you can get it on and off quickly with dirty hands, so if you are on a boundary take the larger.
Shoes
The Sparco Fast and Chrono mechanics shoes use the standard Sparco ladder. Measure heel to longest toe, standing, and work from the bigger foot.
The Alpinestars Radar V2 mechanics shoe uses the Alpinestars ladder instead, which carries half sizes Sparco does not: UK 7 is an EU 40.5, UK 9.5 is an EU 43.5 and UK 11 is an EU 45.5. Go by the UK size on that one. It also runs up to UK 14.
Shorts
The Sparco Bermuda cargo shorts run S to XXL on the same letter bands as the overalls above, sized on your waist rather than your chest.
A note on approvals
Some of this category is FIA 8856-2018 approved and some is not. The Sparco Tide Meca and R-Meca gloves, the OMP Pro Mech gloves and the Sparco Fast and Chrono shoes carry the driver-standard approval, which matters if you are working on a refuelling stop. The Workshop EVO gloves, the cargo shorts and the MS-4 and MS-5 overalls are workshop kit. The approval is listed on every product page.
Kitting out a team?Send us the sizes and we will sort the mix. We can usually do better on a full crew order than on the individual pieces. Call 0115 989 3488 or email Sales@GSMPerformance.co.uk.
Sparco bands from sparco-official.com. OMP numeric ladder from their published suit chart. Glove and shoe ladders as verified for our racing glove and racing boot size guides. All checked 2 August 2026.
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