Amazon.com : Premium Large Exercise Mat 6'x4.5'x7mm, Ultra Durable Workout Mats for Home Gym Flooring, Non-Slip, Thick Cardio Mat for Plyo, MMA, Jump, Weightlifting- Shoe Friendly, Eco Friendly (Black) : Sports &
Costco (in Canada at least) has these sweet rubber mats that remind me of the gym. Way cheaper than Amazon since they are heavy as heck! It's flat on the other side :
$29.99 Rubber Floor Mats 4' x 6' x 3/4" - Second Quality - Cashmans
Rubber-Cal Diamond Plate 4 ft. x 4 ft. Black Rubber Flooring (16 sq. ft.) 03-206-W100-04 - The Home Depot
Rubber Flooring Gym Mat 3.0 - Bells Of Steel USA
Rubber Gym Flooring Canada | Gym Floor Mats and Tiles
Rubber Gym Mat - 1/2" thick, 4 x 25' H-9400 - Uline
PROSOURCEFIT Thick Exercise Puzzle Mat Black 24 in. x 24 in. x 0.75 in. EVA Foam Interlocking Anti-Fatigue (6-pack) (24 sq. ft.) ps-2997-extp-black - The Home Depot
NEXT 24ft Gym Flooring Exercise Mats Black N2001 - Best Buy
Rubber Gym Flooring Canada | Gym Floor Mats and Tiles
Best Gym Floor Over Carpet for Home - StayLock Tiles
Foam Gym Mats – Xspec Gear
Rubber Gym Flooring Canada | Gym Floor Mats and Tiles
Rubber Flooring Mat 4x6' - 3/4” thick - Equip Your Gym
EZ Flex Interlocking Recycled Rubber Floor Tiles by Mats Inc. | Costco
IncStores 4'x6' Premium Mat - Vulcanized Rubber Exercise Mat, High Density Floor Mats for Gym Flooring, Home Gym, and Horse Stall Mat (Gray, 3/8" Thick - 1 Mat), Exercise Mats - Amazon Canada
$29.99 Rubber Floor Mats 4' x 6' x 3/4" - Second Quality - Cashmans