I have both a mat and one of the Weathertech trunk mats for the roll out floor
2005 BMW X5 | Cargo Mat and Trunk Liner for Cars SUVs and Minivans | WeatherTech.com

There is a BMW sourced option for the interior liners that come with the Logo

https://xoutpost.com/bmw-sav-forums/...loor-mats.html
BMW E53 X5 Trunk Mat forregular trunks (NOT FOR ROLL OUT FLOORS)
Part Number 51470002726
Part Name LUGGAGE COMPART MAT
MSRP $98.00
Online Price $76.44

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2005 X5 4.8IS
The Blue ones are always FASTER....

Current Garage:
2005 X5 4.8is
2002 M5 TiSilver
2003 525iT
1998 528i
Former Garage Stable Highlights
2004 325XiT Sport
1973 De Tomaso Pantera, L Model
1970 Dodge Challenger T/A 4 sp Alpine White
1970 Dodge Challenger T/A 4 sp GoManGo Green
1971 Dart Sport, “Dart Light” package
1969 Road Runner 383
1968 Ply Barracuda 340S FB Sea-foam Green