Shin Guard Size Guide: How to Get the Right Fit by Height and Age
An AFC and FFA licensed, UEFA-certified coach with 30+ years on Australian grounds walks you through sizing shin guards the simple way.
Most parents and players buy shin guards by guessing, then wonder why they slip, pinch, or leave a gap above the ankle. After 30 years coaching juniors and seniors across Australian grounds, I can tell you the fix is almost always sizing, not the brand. Shin guards are the one piece of kit, alongside your football boots, that every player has to get right. Get the height first, match it to a size, then check the coverage on the leg. This guide shows you exactly how, with a height chart you can use in two minutes.
How shin guards should fit
Before any chart, learn the rule that every size depends on. A shin guard should sit about two finger-widths below the bottom of the knee and end just above the bend of the ankle, where the sock starts to crease when you flex your foot. Side to side, it should wrap the front of the shin bone without sliding when you tap it. If it covers the full shin bone and stays put through a few quick knee lifts, the size is right. If it rides up into the knee or leaves the lower shin bare, adjust the size accordingly.
Step 1: Measure the player’s height
Stand the player against a wall in socks, heels flat, and mark the top of the head. Measure floor to mark in centimetres. Height is the single best predictor of shin guard size, because longer legs need longer guards. If you want to be precise, also measure the shin itself, from the soft spot just below the kneecap down to where the ankle bone starts. That shin length is what the guard needs to cover, minus a small gap at each end.
Step 2: Match height to a shin guard size
Use the chart below to turn height into a starting size. These bands follow the way most football brands such as Nike, adidas, and Mitre cut their adult and youth guards. Find the player’s height, read across to the size, then confirm with the coverage rule from above.
| Player height | Suggested size | Typical age |
|---|---|---|
| 110 to 130 cm | XS / Small Youth | 4 to 7 |
| 130 to 150 cm | Small | 8 to 11 |
| 150 to 165 cm | Medium | 12 to 14 |
| 165 to 180 cm | Large | 15 to adult |
| Over 180 cm | Extra Large | Adult |
Step 3: Check the fit on the leg
Put the guard on with the match sock over it and the sleeve or strap done up. Ask the player to lift each knee to their chest a few times and jog on the spot. The guard should not slide into the knee, spin around the shin, or expose the lower shin bone. Two fingers should fit between the top of the guard and the kneecap. If it digs into the ankle when the foot flexes, it is too long. If the shin bone is exposed near the ankle, it is too short.
Kids and youth shin guard sizing
Junior sizing is where most mistakes happen, because kids grow between seasons and hand-me-downs rarely fit right. As a rough guide, a 7 year old usually sits in a small youth guard, a 10 to 12 year old in a youth medium, and most 13 year olds move into an adult small. Do not buy two sizes up to make them last. An oversized guard slides sideways the moment the leg moves and leaves the shin bone exposed exactly where it gets kicked. Re-check the fit at the start of every season, and if you are buying for a junior, our pick list for kids shin pads covers the sizes that actually hold up.
Mini, slip-in, or full-size shin guards?
You will see three broad styles: mini or ankle-free guards that many pro players favour, slip-in guards held by a sleeve, and full-size guards with ankle protection and straps. For senior and competitive players who want a barely-there feel and accept less coverage, mini guards are fine, and most leagues allow them, since Law 4 of the IFAB Laws of the Game only requires shinguards to provide reasonable protection and be covered by the socks. For juniors and anyone still developing, I steer parents toward slip-in or full-size guards that cover more of the shin and protect the ankle. Comfort matters, but at junior level protection wins. Sizing still follows the same height rule whichever style you pick.
Some footballers, Messi included, wear tiny shin pads because at professional level they have elite body control, rarely leave the shin exposed in a challenge, and play on soft, true pitches. A tiny pad still satisfies the laws and takes the sting out of a glancing knock, but it will do little in a full-blooded fifty-fifty on a hard suburban ground. None of those conditions apply at club level.
For club players my call is simple: full coverage until at least under-14 competitive level, then earn the switch. A player with clean movement patterns who wants a smaller slip-in can make that move with eyes open. For older juniors on hard surfaces, a premium compression guard like the G-Form, a popular pick with NPL juniors for exactly that reason, is a sensible middle ground between a mini pad and a bulky full-size guard.
Do brands size shin guards differently?
Yes, a little. A Nike medium and an adidas medium are close but not identical, and Australian retailers sometimes list the same guard under a different size label. That is why the coverage rule beats any chart. Use the height chart to pick a starting size, then confirm on the leg. If you are buying online and cannot try first, choose the size your height lands in, and check the retailer’s own chart against the height bands above. When in doubt for a growing junior, the smaller size that still covers the shin bone is safer than the larger one that slides.
Once you know the size, see how the current options stack up in our guide to the best soccer shin guards in Australia, or head back to the full shin guards hub for protection advice across every age group.
Shin Guard Sizing FAQs
How do I know what size shin guards to get?
Measure the player’s height, match it to a size chart, then check the fit on the leg. The guard should cover the shin bone, sit two finger-widths below the knee, and end just above the ankle bend without sliding when you tap it.
What size shin pads should a 12 year old wear?
Most 12 year olds fit a youth medium, roughly a height of 150 to 165 cm. Taller 12 year olds may already need an adult small. Always confirm with the coverage rule rather than buying by age alone.
What size shin guards for a 7 year old?
A typical 7 year old, around 120 to 130 cm tall, fits an extra-small or small youth guard. Avoid sizing up to make them last, because an oversized guard slides off the shin bone and leaves it exposed.
Is it better to have bigger or smaller shin guards?
Bigger means more coverage but less freedom, smaller means comfort but more exposed shin. For juniors and developing players, choose the size that covers the shin bone fully. For senior players who accept the trade-off, smaller mini guards are a personal-preference call allowed in most leagues.
Do shin guard sizes match shoe size?
No. Shin guards are sized by height and shin length, not shoe size. A player with big feet can still need a small guard if they are short, and the reverse is true too.
