Adidas
Adidas F50 Hyperfast League Mid FG Football Boots (KJ3420) - Mint/Navy/Lemon
Adidas F50 Hyperfast League Mid FG Football Boots (KJ3420) - Mint/Navy/Lemon
Mint/Navy/Lemon / UK 6
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The Adidas F50 Hyperfast League Mid FG is the mid-cut version of the F50 League firm-ground boot. The raised collar carries the upper above the ankle line, changing how the boot sits and how it feels going into a sprint, while the firm-ground soleplate underneath is specified for natural grass. This is the Mint/Navy/Lemon colourway, product code KJ3420, in UK sizes 6 to 8.
Key Features
- Mid-cut collar: The upper extends above the ankle rather than finishing at it, the defining difference from the standard League FG.
- Firm-ground soleplate: Studs configured for natural grass pitches.
- League tier: One step above Club in the F50 range.
- F50 speed last: The narrow, low-profile shape used across the F50 line.
- Laced closure: Full lacing beneath the collar for midfoot adjustment.
Performance Overview
A mid collar is a preference, not an upgrade. Players who like it report a more connected, sock-like feel through the ankle; players who do not find it restrictive. It is worth knowing which camp you are in before buying, because everything below the collar is the same League FG boot.
On grass the firm-ground plate behaves as it should — clean penetration, clean release, enough bite to plant hard and go the other way. The F50 last keeps the boot close and narrow through the forefoot.
Benefits
- Collar feel without elite pricing: Mid-cut construction at the League tier.
- Correct plate for grass: FG studs rather than a hybrid compromise.
- Traceable spec: Product code KJ3420 identifies this exact model and colourway.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Adidas |
| Model | F50 Hyperfast League Mid |
| Product Code | KJ3420 |
| Product Type | Football Boots |
| Outsole | FG (firm ground) |
| Collar | Mid-cut |
| Closure | Laced |
| Colourway | Mint/Navy/Lemon |
| Sizes | UK 6, 7, 8 |
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Final Verdict
The League FG with a collar on top. If you already know you prefer a mid-cut boot, this is the F50 that gives you one at a sensible tier; if you have never worn one, try before you commit — it is a genuinely divisive fit.