WeaterTech neglected to include the two "T-Bottom Retention Hooks" with my order. I called complaining that I thought they sold me the wrong product. They sent me the hooks and now the mat fits nicely with no movement. These are for the driver's side because the mat was moving around and interfering with the accelerator pedal. There aren't hooks for the passenger side or rear row and they aren't needed.
For the cargo area I purchased the BMW branded mat which includes a drop down flap which protects the rear bumper when loading/unloading. The flap hides nicely under the mat when not in use.
2014 BMW 528ix M Sport- Space Gray Metallic, Mocha Nappa Leather, Anthracite Wood Trim. Packages: ACC, DA, DA+, Lighting, Luxury, Prem, H-K SS, SAT, Rear Shade
2013 BMW X3 28i M Sport - Deep Sea Blue Metallic, Sand Beige Nevada Leather, FS Wood Trim, HG Roof Rails, and BMW Apps. Pirelli P7 RFTs.
Packages: Cold, Con, DHP, Prem, Premium Sound, Tech