We've currently got 2 car seats in our X, and the mats we have are made by Summer Infant or something like that... "Summer" something, I know that much... They're pretty nice and can be folded depending on how high up the seat back you want it to go. They also have a little flap that hangs down over the cushion front edge with a few pockets to hold zippy cups and toys and stuff...
Geezus, this post is so unfortunately lame yet so necessary too... Parenthood...
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2018 F15 X5d Carbon Black/Nutmeg Individual- Oil Burner Tow Rig
2013 E82 1M3 Carbon Black/Black- S65/DCT Track Toy
2013 F25 X3 35i Alpine White/Chestnut- German American Family Hauler
Past: '11 E91 335is, '11 E90 M3, '10 X5M, '14 328d, '03 330i Dinan3 ZHP, '04 330i ZHP, '12 X3 35i