4-Needles Flat-seam - EMFRAA compression base-layers are built with Flat-seam by 4-needle Feed-Off-The-Arm sewing machine and it makes your skin to feel more comfortable and softer. 4-Way Stretch Compression - EMFRAA compression base-layers have 4-Way stretch compression performance, which grab your muscles tightly and provide better performance for all your activities.
Bought these leggings so I could train outside without getting too cold as I had stupidity agreed to do the Yeovil half marathon with a friend.
Although I don't think these are true compression leggings as they cling rather than compress they have been invaluable while training and helped to keep me warm on the day of the run which was flipping cold; 2 degrees before wind chill!
Comfort wise you barely know you're wearing them which does feel a little risque to start with!
Could do with being an extra inch or two longer in the leg but for the money and comfort while wearing they deserve 5 stars.