Measure around the head just above the eyebrows and ears, then use the exact model's chart. Manufacturer advice can differ: Gilbert says choose smaller between sizes, while Optimum's Razor page says larger; its listed head measurements are 52, 54.5, 57, 59.5 and 62 cm. For match play, verify the World Rugby Approved mark and that exact model on the compliant-device list; headgear is not concussion protection.
Measure first, then compare the chart and closure instructions for the exact headguard. Size labels and advice about being between sizes can differ by maker, so a chart for one model should not be applied to another.
Check match approval
World Rugby says permitted devices must carry the World Rugby Approved mark or a label showing it, and the exact device must appear on the compliant-device list. If all of its approval marks or labels are removed, World Rugby says it cannot be used in matches. Read the equipment rules guide and check the current World Rugby permitted-device list before match use.
Measure for the exact model
Measure around the head just above the eyebrows and ears. Then follow that product’s own size chart and fitting method.
| Manufacturer example | Published sizing guidance | Between-size advice |
|---|---|---|
| Gilbert headguards | Measure above the eyebrows and ears, then use the chart on the product page. The lace closure adjusts to a snug fit. | Choose the smaller size. |
| Optimum Razor | Its current size finder lists 52 cm for XXS, 54.5 cm for XS, 57 cm for S, 59.5 cm for M and 62 cm for L. | Choose the larger size. |
Those are instructions for the listed makers and model range, not a shared rugby sizing standard. Recheck the current chart for the exact item and region before buying.
Check the fit and fastening
Gilbert advises tightening its lace closure evenly until the headguard feels snug without pressing. Optimum describes a snug fit, with its adjustable strap secure but comfortable. A size number alone cannot show whether the specific model’s shape and closure suit the player, so check both the head measurement and the maker’s fit instructions.
Know what headgear is designed to do
World Rugby’s body-padding performance specification says compliant headgear and padding are intended to protect against cuts and abrasions. It does not claim to prevent concussion or address every safety concern. For other protective-equipment choices, compare the shoulder pads and protective vests guide and the rugby mouthguard guide. Browse rugby protective gear.
Sources
Common questions
How do I measure for a rugby headguard?
Wrap a tape around the head just above the eyebrows and ears, then use the size chart for the exact model.
Should I size up or down if I am between sizes?
There is no universal rule. Gilbert says to choose the smaller size; Optimum's Razor guide says to choose the larger size.
How should a scrum cap fit?
Manufacturer guidance describes a snug fit without pressure. Tighten the closure evenly and secure the strap comfortably.
Does a rugby headguard prevent concussion?
No. World Rugby's performance specification says compliant headgear is intended to protect against cuts and abrasions, not concussion.