This is a women's turtleneck sweater.

It features a slim-fit silhouette, closely contouring the wearer's upper body and arms, giving a sleek and form-fitting appearance.

The item is made from a finely ribbed knit fabric, suggesting a soft, comfortable, and highly stretchy texture. The vertical ribs create a subtle linear pattern across the garment.

Key design elements include a tall, folding turtleneck collar that provides warmth and a classic look. It has long sleeves that extend to the wrists, with the ribbed pattern continuing down to the cuffs. The overall construction is simple and unadorned, focusing on the texture and fit.

The sweater covers the entire torso and arms. While its full length isn't entirely visible as it's tucked in, it appears to be a standard hip-length or slightly longer top designed to be worn either tucked or untucked.

In the image, the sweater is styled by being neatly tucked into a pair of light-wash denim jeans. It is accessorized with a delicate chain necklace featuring a small, round, metallic pendant, and a shoulder bag with a strap composed of large, spherical beads is draped over the wearer's shoulder.

Its versatile and classic design makes it suitable for a range of occasions, from everyday casual wear to smart-casual settings, and it can easily be dressed up or down. It also serves well as a layering piece during cooler weather.

The intrinsic stretchiness of the ribbed knit fabric is a significant attribute, contributing to its comfortable, body-hugging fit while allowing for ease of movement.