Football boot soleplates carry letter codes that tell you which surface the boot is built for. FG is firm ground (natural grass), AG is artificial ground (3G and 4G pitches), MG is multi-ground (both), TF is turf (short-pile astro and hard surfaces), indoor (IC or IN) is for sports halls and SG is soft ground (soft, muddy grass). If most of your football is on 3G or 4G, AG is the obvious choice.
Below you will find what each soleplate means, when to pick it and what goes wrong if you wear the wrong one. The soleplate has little to do with how wide a boot is, but a lot to do with which versions you can actually buy. See also our page on wide fit astro turf football boots.
What does FG mean on football boots?
FG stands for firm ground: dry to slightly damp natural grass. The studs are moulded, usually bladed or conical. It is the standard choice for grass pitches, as long as the pitch is not waterlogged.
On an artificial pitch, an FG soleplate grips too hard when you turn, which puts extra strain on your knees and ankles. The studs also wear down faster, and with some brands that can affect your warranty. If you regularly wear FG boots on 3G, an AG or MG pair is the better option.
What does AG mean on football boots?
AG stands for artificial ground. The studs are shorter and usually rounded, and they spread the pressure across the soleplate. AG is made for modern long-pile artificial pitches (3G and 4G), whether wet or dry.
AG is the sensible default if you train and play mainly on artificial pitches, which describes a lot of grassroots players. On short-pile, heavily sanded astro, a TF often works better.
What does MG mean on football boots?
MG stands for multi-ground and is designed for both natural grass and artificial pitches. The studs are shorter and often hollow and conical. One pair covers the Sunday match on grass and midweek training on 3G.
It is a compromise, though: in deep mud you get less grip than with FG. Do not expect MG to handle every surface equally well.
What does FG/AG mean on Puma boots?
Some Puma models carry a hybrid FG/AG label. That usually means a rounded stud that leans towards FG. Check the rules at your ground, because the label does not override a ban on bladed studs.
What are astro turf trainers (TF)?
TF stands for turf. These have lots of small rubber studs on a flatter, cushioned soleplate. In the UK they are what people call astros or astro turf trainers. You wear them on training areas, caged five-a-side pitches, older astro pitches and hard surfaces. On long-pile 3G you can slide when you accelerate or stop sharply.
Which soleplate for indoor football and futsal (IC or IN)?
IC and IN both mean indoor. The sole is flat, made of gum rubber and designed for hard sports hall floors and futsal. If you play on an indoor artificial pitch, you need AG or TF rather than IC. Players with wide feet who play indoors will find options in our guide to indoor football boots for wide feet.
Are screw-in or metal studs allowed?
SG stands for soft ground and comes with long studs, often screw-in metal ones. They are made for genuinely soft, muddy grass pitches in the depths of a British winter. Rain on its own is not a reason to wear them: the ground can still be hard beneath the mud, so the studs cannot sink in and press up into the sole of your foot instead.
Whether metal studs are allowed depends on the rules of your league, the age group and the club or ground. Sources contradict each other, so check with your club or league before you buy a pair. Our page on football boots with metal studs goes into more detail.
Can you wear artificial pitch boots on grass?
You can, but the studs are shorter and designed for artificial surfaces. On dry grass they usually cope fine; on wet or soft grass you lose grip. If you play on both surfaces, MG is a sensible middle ground.
Which soleplate for kids’ football boots?
For young players the choice is often made for you: junior versions of the lower tiers are mostly sold only as MG, TF or indoor. If your child plays on both grass and 3G, MG is the easiest answer because one pair does both. If they play mostly on long-pile 3G, AG is the better fit. For sizing, see our guide to kids’ football boots and how to choose a size.
Do you need more than one pair?
That depends on how often you play on each surface. If you switch between grass and 3G every week, two pairs (FG and AG) are the cleanest solution, with MG as the compromise. If you only ever play on one surface, a single pair with the right soleplate is all you need. The wrong soleplate does not just mean less grip; it also means more wear and, when you turn, more strain on your knees and ankles.
If a soleplate does not feel right, for example because of pressure points under the foot, do not play on. If the discomfort does not go away, see a podiatrist or your GP.
Which soleplate for wide feet?
The soleplate does not change how wide the boot is. AG and MG versions of the same model mostly share the same last. Not every colourway of a top model comes in AG, however, and junior versions of the lower tiers are often only available as MG, TF or indoor. So choose the surface first and the model second. Our football boot adviser lets you filter by surface, and our main guide to the best football boots for wide feet gives you the full picture.
How can you tell which soleplate a boot has?
The letters appear in the product name, in the retailer’s description and often on the soleplate itself or under the tongue. Look at the full code, for example FG/MG or FG/AG, because one model can come in several versions. With a second-hand pair or an older colourway, it pays to look at the studs themselves: long studs, often metal, point to SG, lots of small rubber studs to TF, and a flat sole to indoor.
Which of the football boot soleplates should you choose?
- Natural grass, dry to slightly damp: FG.
- Long-pile 3G or 4G artificial pitch: AG.
- Grass and artificial pitches with one pair: MG.
- Short-pile astro, older pitches, hard surfaces: TF.
- Sports hall: indoor (IC or IN).
- Soft, muddy grass: SG, once you have checked the rules.
If you are still unsure, the adviser can filter by surface, and every model page shows which soleplates are available.