Knit with 100% alpaca fiber. This stretchy, rib knit, tank is perfect for layering in spring and fall. The alpaca colors are shown in the last photo, and they are not dyed! They are the natural colors of the fiber. Because they are not dyed, the black isn’t a jet black and can appear as a very dark brown in some lighting and the white is not bleached, it is almost ivory in color. The tank shown is dark rose grey. I love using the natural colors; the yarn is softer and it very eco friendly. If you are interested in the organic merino wool it comes in the natural off white. I dye some every year with wild black walnut husks (nothing else is used besides water). If you would like the dyed merino, please contact me to see the color options available at the time of your order. The black walnut husks create a range of brown colors. This tank is about 23 inches/58cm in length. If you would like it shorter, please let me know in a note at purchase. If you would like it longer, please see this tank dress listing: http://etsy.me/2nQ6hkC The tank is very stretchy and as long as the size you choose is near your measurements, it should work fine. If you want to, you may send your measurements at purchase. This is made out of animal fiber which can irritate some people in sensitive areas, such as under the arms. Wearing a cotton tank top underneath helps with this. Each item is lovingly, handmade by myself once your order is placed. Hand wash only when needed. Instructions come with your first order. Please visit woollywhotknots.com for other made to order items and ready to ship inventory.