Question about level requirements

Yesterday I found this crown:

Plague Visor

Crown

Defense: 27

Durability: 44 of 50

Required Strength: 55

Required Level: 60

Item Version: 1.10+ Expansion

Item Level: 86

Fingerprint: 0x128557a2

+36 to Life

Fire Resist +22%

Lightning Resist +19%

10% Faster Hit Recovery

Poison Length Reduced by 25%

I was surprised to see that it require lvl 60 in order to use it, I have other similar items but as you can see none of them require level 60:


Code:

Imp Horn
Basinet
Defense: 103
Durability: 27 of 30
Required Strength: 82
Required Level: 25
Item Version: 1.10+ Expansion
Item Level: 88
Fingerprint: 0x5647e0c7
+4 to Life
+22% Enhanced Defense
Lightning Resist +28%
Cold Resist +25%
10% Faster Hit Recovery
Poison Length Reduced by 25%

ramble Cowl
Mask
Defense: 27
Durability: 20 of 20
Required Strength: 23
Required Level: 12
Item Version: 1.10+ Expansion
Item Level: 26
Fingerprint: 0xb8f132e8
+12 to Strength -> 2x Amethyst
+30 to Attack Rating
Fire Resist +11%
Lightning Resist +10%
+3 to Light Radius
10% Faster Hit Recovery
Poison Length Reduced by 25%
Socketed (2: 2 used)

Why this particular item has such high lvl req?|||Well... What's on the offending crown that's not on the other two?

Affix calc

'of the Mammoth' gives +31 to +40 to Life and has a lvl-req of 60.|||Thanks for the fast reply|||To build on what Hubb said (this will be more useful for the future), the affixes etc decide the level in a sense. For example, if you make a runeword;

The level requirement will be the highest level requirment ingredient, be it the weapon/armour, a rune or whatever

So if you had the lowest possible 4 socket weapon for infinity, with a level requirement of say 29 (probably isn't 29 ), then the actual level requirement would be that of the ber runes used in the runeword (bermalberist)! |||you will see some rare items (and crafts) that have surprisingly high required levels despite not having great mods. Some high level affixes, especially skill charges, just aren't very useful sadly.