Wore this shirt for 2 1/2 weeks of travel in Europe. The white stayed white and was easy to clean. Good fit with a long cut. I got a medium (I'm 5'6 and size 4) and could have done a small.
The stitching is picky and seems to unravel easily (???) but the shirt performed well enough that I would recommend it anyway.
Soft fabric. Relatively quick drying. Have worn it for tech and also with a scarf in the city. Versatile top.

Bought the go-light as a base layer. I got a medium (I'm 5'6 and size 4) and should have gotten a small.
Regardless of sizing - I wouldn't have kept the product. I got the shirt in white and it was incredibly see-through. To the point that it looks silly and limits the uses. I wanted a light-weight base layer - but it's so light it seems like slip-type-fabric.
I can't comment on performance - but the cut/fit/material alone made me unwilling to find out about performance.
Sticking to MHardware and Arc'teryx for quality design and function base layers.

Bought the white in Small. I am 5'6 and a size 4, normal torso length. I had to lengthen the shoulder straps all the way and it still seemed to cut into my armpits from shoulder-strap-pull. The seam across the chest creates an odd profile and seemed to flatten and droop the chest (no bueno). It was a little short, despite the fully lengthened straps and rather loose around the stomach.
I have a North Face tank with a similar cut (back triangle cut-out as well) and it fits a million times better (The North Face Vaporwick Cami).
Fabric is good - but the cut/design kills it. Returned it.

I have this jersey in the black/white style. Cool look. I really like the fabric - my favorite sleeveless jersey over all my others. Good pockets, good fit, great fabric. Wore this for the Moab Century and it was perfect. Castelli always runs small so get a larger size. I normally wear small and I have to get medium's in Castelli.

Very comfortable - first time out I rode 45 miles and really liked the tights. Kept me warm and had a good chamois - no problems. Fits true to size. I went a little bigger than normal in case I decided to double-layer on exceptionally cold days. I wear a small but bought the medium. The medium's are fine when worn alone or double-layered.

Rode on these shorts on summer. Never had chaffing or discomfort. Good padding - perfect for long-rides. Has a longer leg length than some others.

I wore these all summer and loved them. The stitching is flattering and the leg is a little shorter than some others (nice for longer rides and raising the tan-line). Great chamois - never experienced discomfort. I am a size 4 and wear a small comfortably. Comfortable leg 'grips' - no pinching.

Love these hydration tabs. I won't ride without them - and I'm finding myself using them at other times now as well (hiking, wandering around town, etc).
I don't do well with sugar - these tabs are NOT too sweet and have a good flavor. I love the citrus and the kona. They work very well - I seriously wouldn't consider riding without them now.

This is the ONLY gel I've been able to find that tastes okay and doesn't contain a bunch of crappy sugar. Hammer gels have kept me from bonking on countless occasions. My favorite fuel - I really won't even consider doing any kind of lengthy ride without these gels. I love the Vanilla and can stomach the espresso if I need the extra kick of caffeine. GREAT energy.

I'm not usually into 'girlie' stuff, but this top is really cute, and looks good out riding. Sleeveless is awesome, and I LOVE the extra long zipper. I don't have any other jerseys that unzip so far. Nice for cooling off.
It's pretty short - I had to go with a medium because the small looked funny and always showed my stomach. The medium wasn't too big though (even though I normally wear smalls). Good pockets - all around nice jersey for long rides on hot days. The long zipper has allowed me to unzip, drop if off my shoulders and wear is around my waist with just a sports bra when it was miserably hot out.

I love this tent. Easy set up. I divide between two for packing and it's perfect. I like to keep my backpack in my tent with me, so you can't really fit more than two people with backpacks. Even without I wouldn't want to squish three. There's a plastic window on the fly over each door that allows you to see out - i REALLY love this feature. Not sure how it will hold up - seems strong - but you never know with plastic. Either way - i really like it. Nice to be able to glance out when you need to. Two big vestibules, and I love that there are 2 big doors as well. Tight design, doesn't blow and billow in higher winds. Included footprint and gearloft are a big plus. I obsessed and did a ton of research when picking my tent - I really think this is one of the best for price and design. I would recommend it.

Love the fabric. Can be used as a baselayer when it's cool, but I've also used it quite a bit in the summer. Great shape. Fits well. Flattering cut. I have it in two different colors and whenever I've gone climbing, hiking, camping... it seems to always be the shirt that comes with me. Come to think of it - it's showing up in way too many pictures lately. I should probably leave it home one of these times.

I've had this jacket since 2003. Nothing else has been good enough to replace it. It has held up well - no tears or down leakage to speak of. I think the cut is great and I have no problem with arms or length being too short. I'm 5'6 and wear a small. Initially the arms are a little short because there's down under your arm pits that puffs the sleeves up, but over a little time, it shifts a little to the right places (never compromising warmth though), and the arms are the perfect length. I've worn this jacket in the really cold temps and been toasty - and I also wear it in spring and fall, summer camping evenings, and feel like it works well in cold as well as just a little chilly. It is NOT a long coat - which is great for climbing, backpacking, etc. I also wear it as my city coat and don't get cold - unless I'm low-riding and showing some skin - and that's my own dang fault. The shorter cut is flattering though. I wouldn't want it any longer.