I just think the design around the calves with the mesh and the wave looking laser cut hem is so gorgeous! This is the type of design that attracts me to Lululemon. I'm not really into super feminine details on my clothing items, and I think the design on these crops have the right level of girliness without going overboard (like bows or ruffles... yuck). They managed to still stay interesting and fashion forward, and I'm super happy with them in person too!
I think the size 4 is definitely the right size for me. They are a very comfortable fit, actually. There's no digging anywhere, and no excessive tightness around the calves. They are not super compressive, because the material is quite stretchy. But the fabric still has substance to it so the coverage is pretty good for such a light color. If I get into a deep squat position, then I can see the outline of the rip tag underneath. So I guess they are somewhat sheer in that case. But I always expect some level of sheerness with lighter bottoms, and this is well within the reasonable range for me. They are similar to the cyber stripes High Times pant in silver fox, if you have those. I'm very happy with these.
You can better see the design on the inner leg on this side view:
Since they have the roll down waist, they go up super high - this is just like the High Times pant, you can just wear them like this and have a completely smooth tummy!
Here's the view of the mesh design from the front:
Mesh from the back: