Types of Necklines: Styles, Construction and Spec Guide

The main types of necklines are crew, V-neck, scoop, mock neck, turtleneck, boat neck, henley, polo collar, square, sweetheart, halter, off-shoulder, cowl and keyhole. Knit tops usually finish the neckline with a rib collar, binding or self-fabric band, while woven garments use facings, bias binding or a lining. In a tech pack, a neckline is defined by its width, front drop and back drop, each with a tolerance.

This guide explains each neckline, how it is built in knits and wovens, how to measure it on a spec sheet, and which necklines suit tees, hoodies and dresses. Read it alongside our guide to types of sleeves when you design the full top.

Everyday necklines for knit tops

These are the necklines you see on most T-shirts, sweatshirts and knitwear. They are almost always finished with a rib or a self-fabric band.

• Crew neck: A round neckline that sits close to the base of the neck, finished with a rib collar. The default for tees and sweatshirts.
• V-neck: Comes to a point at centre front, from shallow to deep. The point is finished with a mitred seam, a crossover or an overlap. A clean, even V is one of the harder details for a factory to repeat across a whole order.
• Scoop neck: A wider, lower, rounded curve than a crew. Common on women’s tees, tanks and bodysuits. Usually finished with a narrow binding or a turned and coverstitched edge.
• Mock neck: A short stand-up collar that does not fold over. Made from a doubled rib or self-fabric band. Popular on heavyweight streetwear tees and long sleeves.
• Turtleneck or roll neck: A tall collar that folds down over itself, usually a doubled rib for good recovery. Some brands use roll neck for a softer, less structured fold. In the UK it is also called a polo neck, which is easy to confuse with a polo collar.
• Henley: A round collarless neckline with a short buttoned placket at centre front, usually with two to five buttons. Specify placket length, width, button count and whether the placket is self-fabric or rib.
• Polo collar: A fold-down collar, usually flat-knit, attached to a buttoned placket. Classic on piqué polo shirts. Flat-knit collars are knitted to size, often with tipping stripes, so the collar and placket each need their own spec.

Fashion necklines for dresses and wovens

These shapes appear more often on dresses, blouses and bodysuits. Many are cut in woven fabric, and some need a closure because the opening cannot stretch over the head.

• Boat or bateau neck: Wide and shallow, running almost straight across from shoulder to shoulder. Front and back drops are similar. Needs a facing or clean turned edge, and a careful shoulder width so it does not slip.
• Square neck: Straight across the front with two vertical sides, forming corners. In wovens the corners are reinforced, clipped and faced. In knits the band is mitred at each corner.
• Sweetheart: A curved neckline shaped like the top of a heart, dipping at centre front. Usually on fitted, lined bodices, sometimes with boning. Mostly woven.
• Halter: Straps or a band go around the back of the neck, leaving the shoulders bare. Fastened with a tie, hook or button. Needs strong anchoring because the neck carries the weight of the bodice.
• Off-shoulder: Sits below the shoulders, across the upper arms. Held up by elastic, shirring or a structured bodice. Elastic tension is the critical spec: too tight is uncomfortable, too loose and it slips.
• Cowl: Soft draped folds at the front or back neck. Cut on the bias in wovens, or in a fluid knit. The fabric decides whether it drapes well, so sample it in the final fabric.
• Keyhole: A small opening, often teardrop-shaped, at centre front or back. Closed at the top with a button and loop or a tie. Common on blouses and dresses, and on the back neck of some tees.

Necklines compared

How necklines are constructed in knits and wovens

The finish is what holds the neckline in shape after washing and wear. Knits and wovens need different methods, because knits stretch and recover while wovens do not stretch and will fray.

Knits

• Rib collar: A strip of 1×1 or 2×2 rib, folded double, overlocked to the neck and then topstitched with a coverstitch. The rib is cut shorter than the neck opening so it pulls in and lies flat. Getting this ratio right stops a crew neck from waving or gaping.
• Self-fabric band: The same jersey as the body, folded and attached like a rib collar. It looks cleaner, but jersey recovers less than rib, so it suits lighter fashion tees more than heavy basics. Our guide to jersey fabric explains why.
• Binding: A narrow strip wrapped around the raw edge and coverstitched, often in one pass with a binder attachment. Common on scoop necks, tanks and babywear.
• Back neck tape: A tape sewn over the back neck seam from shoulder to shoulder. It covers the seam, adds stability and gives you a branding spot for a printed or woven tape.

Wovens

• Facing: A piece cut to the same shape as the neckline, interfaced, sewn on, then turned inside and understitched so it does not roll out. Used on boat, square, keyhole and many dress necklines.
• Bias binding: A strip cut on the bias so it bends around curves. It can be turned fully inside or left showing as a narrow trim.
• Lining: On sweetheart and other fitted bodices, a full lining finishes the neckline and hides every seam.
• Closures: A woven neckline smaller than the head needs an opening, such as a zip, a button placket or a keyhole.

Hoodies follow their own logic. The hood is sewn into a round neckline and the seam is usually covered with a neck tape. A crossover at the hood front, a lined hood and the hood opening are all worth specifying. Our hoodie manufacturer page covers the category in more detail.

Measuring necklines on a spec sheet

A neckline is defined by a handful of points of measure. Write down how each one is measured. Neck width can mean seam to seam or edge to edge, and two factories may read it differently.

• Neck width: The horizontal distance between the two high point shoulder (HPS) points.
• Front neck drop: The vertical distance from an imaginary line between the HPS points down to the centre front neck seam or edge.
• Back neck drop: The same measurement at centre back. Usually much shallower than the front.
• Collar or band height: The finished height of the rib or band, measured at centre back.
• Neck opening stretched: The circumference of the opening when fully stretched. It must pass over the head comfortably. This is the measurement most often missed on mock necks and tight crews.
• V depth or placket length: For V-necks, henleys and polos.

Typical tolerances are around plus or minus 0.5 cm for neck width and front drop, and around plus or minus 0.3 cm for collar height. Tighter tolerances are hard for a factory to hold on stretchy knit fabric. Necklines grade in much smaller steps than the chest, so check that your grade rules do not make the neck too wide on the largest sizes.

Which necklines suit tees, hoodies and dresses

T-shirts

Crew is the default and the safest choice for a first drop. Heavyweight streetwear tees often use a thicker rib and a slightly higher, tighter neck. V-neck, scoop and henley suit fitted and women’s tees. Mock necks suit long sleeves and boxy fits. Our T-shirt manufacturer page covers tee production in more detail.

Hoodies and sweatshirts

Hoodies use a hood sewn into a round neck, sometimes with a crossover at the front. Sweatshirts use a crew neck with a deeper rib, sometimes with a small V-insert at the front neck, a detail taken from vintage athletic wear. Mock and funnel necks suit half-zips and outerwear-style tops.

Dresses

Dresses use the widest range of necklines. Square and sweetheart suit fitted bodices. Halter and off-shoulder suit summer and occasion wear. Cowl and boat necks suit fluid fabrics. A knit dress can use most knit necklines, while woven dresses rely on facings, linings and closures.

What to put in your tech pack

1. Neckline sketch: Front and back flat sketches with the neckline drawn to scale, plus a close-up callout of the finish.
2. Points of measure: Neck width, front drop, back drop, collar height and stretched neck opening for every size, with a note on how each is measured.
3. Tolerances: A plus and minus value for each neckline measurement.
4. Finish and trims: Rib type (1×1 or 2×2), band or binding width, rib-to-neck ratio if you have one, and facing and interfacing specs.
5. Stitching: The seam and stitch used to attach the neckline, such as overlock with a coverstitch topstitch.
6. Back neck tape and labels: Tape width, colour or artwork, and label placement.
7. Closures: Placket length, button count and size, or the keyhole loop and button.

Use our tech pack template to lay these out in a format factories expect.

How Fabrickly can help

Fabrickly is a tech pack and low-MOQ clothing manufacturing studio headquartered in Copenhagen, Denmark, with production at audited partner factories in Bangladesh and China. We turn your sketches and neckline specs into factory-ready tech packs in 7 days and make branded samples before bulk, as private label or full custom cut and sew. Orders start from 50 pieces per style, and sizes can be mixed within the 50. Our standard fabrics are OEKO-TEX Standard 100 certified, with GOTS organic cotton on request. Production gets in-line QC and an AQL 2.5 final inspection, and we ship DDP (delivered duty paid) to the UK and EU. Send your designs through our quote request and get an itemised quote within one business day.

Frequently asked

Q: What are the most common types of necklines?

On tops, the most common are crew, V-neck, scoop, mock neck, turtleneck, boat neck, henley and polo collar. On dresses and blouses you also see square, sweetheart, halter, off-shoulder, cowl and keyhole necklines.

Q: What is the difference between a mock neck and a turtleneck?

A mock neck is a short stand-up collar that does not fold over. A turtleneck is taller and folds down over itself.

Q: How is a crew neck finished on a T-shirt?

Most crew necks use a strip of 1×1 or 2×2 rib folded double, cut slightly shorter than the neck opening, overlocked to the body and topstitched with a coverstitch. A back neck tape usually covers the back seam.

Q: How do you measure a neckline in a tech pack?

The main points of measure are neck width between the high point shoulder points, front neck drop, back neck drop, collar height and the stretched neck opening. State how each is measured and give a tolerance, often around plus or minus 0.5 cm for width and drop.

Q: Which neckline is best for a first T-shirt drop?

A crew neck with a 1×1 rib collar is the safest choice. It suits most customers, is familiar and is standard construction for any T-shirt factory.

— Hasebul, Fabrickly