What makes a 5XL different from a 4XL? The 5XL has a 5" blade, while the 4XL has a 4" blade. Both pieces feature an XL handle at 4.75". 
 
This piece has a beautiful OLEG stabilized maple burl that is dyed orange. The handle on this specific 5XL remains slightly thinner than other 5" bladed knives, and the thin handle is primarily used for maneuverability. Even at 9.75" overall, this piece is still pocket-carryable due to the sleek design. 
 
Statistics.

Style: Kindling 5XL
Steel: Nitro-V 62 HRc
Overall length: 9.75"
Blade length: 5"
Stock: ⅛"
Handle: Maple Burl
Liner: Black G10
Pins: Copper
Tube: Copper