
Square Neck Sleeveless Double-Layer Tank Tops Basic
A tight, double-layer square-neck tank top cut from soft stretch fabric, designed for solo wear or smooth layering under jackets.
Shop nowQINSEN builds one fit block and runs it through the whole line — the square-neck tank, the shaping swimsuit, the wide-leg jumpsuit. This catalogue sorts all 159 pieces by what they actually are, not by season name.
Everything in the catalogue lands in one of 8 categories. These four are the biggest, and they are where the fit block is most visible.
Tanks & Crops
Halter crops, ribbed tanks, camisoles and built-in-bra styles in stretch knits that hold their shape through a wash cycle.
40
02
Shirts & Tees
Square-neck tees, long-sleeve basics, bodysuits and mock necks — the layer that goes under everything else.
38
03
Dresses
Bodycon midis, tiered maxis and easy T-shirt dresses cut from jersey, rib and lightweight woven fabric.
18
04
Swimwear
One-pieces, tankinis, swim dresses and cover-ups built for actual swimming, not only for the deck chair.
17
This one-piece jumpsuit combines a fitted long-sleeve silhouette with a statement square neckline. Constructed in a bodycon fit through the torso and thighs, the full-length legs gently flare from the knee down to the hem.
Ranked by how many people have rated them, not by what the brand pushes. Ratings shown are the ones published on the retailer’s product page.

A tight, double-layer square-neck tank top cut from soft stretch fabric, designed for solo wear or smooth layering under jackets.
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A seamless square-neck romper in thick, four-way stretch fabric with racerback straps and a bodycon short length for sports and leisure.
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A dual-layered, high-stretch polyamide bodysuit with a square neckline, curved shoulders, long sleeves, and a high-cut Brazilian thong base.
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A square-neck, long-sleeve jumpsuit cut in a bodycon fit with full-length flare trousers made from high-stretch, sweat-wicking knit.
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A full-length, long-sleeve jumpsuit cut with a square neckline, a bodycon fit through the body, and flared wide legs.
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A cropped full-zip polar fleece jacket with a protective stand collar and an adjustable bungee hem designed for cold-weather layering.
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A cropped polar fleece jacket cut with a stand collar, full-zip front, and an adjustable bungee hem for post-workout layering or daily wear.
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A double-lined square-neck cami cut from high-stretch nylon-spandex with adjustable spaghetti straps and an open low back.
Shop nowA category tells you what a garment is. A collection tells you what it does — the neckline, the knit, the waistband. Most pieces appear in one or two.
Square Neck
The neckline the brand is known for — straight across, wide enough to sit off the collarbone.
41 pieces
Workout & Yoga
Compression knits, matching two-pieces and tennis dresses built to be moved in.
24 pieces
High Waist
Wide flat waistbands on leggings, shorts, skirts and swim bottoms — no rolling.
20 pieces
Ribbed & Seamless
Two knits that behave differently: rib holds structure, seamless disappears under clothes.
17 pieces
Backless & Open Back
Cut-outs, crossed straps and low backs — with a note on what can be worn underneath.
18 pieces
Tummy Control
Knitted-in control panels through the midsection — mostly swim, some shaping bodysuits.
14 pieces
Wide Leg
Palazzo trousers, wide-leg jumpsuits and fluid lounge bottoms with a defined waist.
13 pieces
Lace & Mesh
Sheer panels and lace trim on camisoles, bodysuits and layering pieces.
12 pieces
Stretch knitwear forgives a lot, but not everything. These are the details that decide whether a piece works, and they are all listed on the product pages.
Open the size & fit guideEverything shown is read from the retailer that fulfils the order and can change between a page build and a click. The figure on the product page is a reference, not a quote.
Where a style is sold in several colours, this catalogue lists them together on one page. Which ones are actually available on any given day is decided at the retailer, not here.
159 of the 159 pieces carry a published shopper rating. The rest are shown without one rather than with a placeholder.
“A knit that stretches is easy. A knit that comes back is the whole job.”
QINSEN sits in a crowded part of the market, and most of its competitors compete on print. This line competes on recovery — whether a legging still holds at the knee after a fortnight, whether a square neckline still sits on the shoulder after a wash cycle. That is a duller pitch and a harder one to photograph, which is roughly why this catalogue exists.
Nothing here is written by the brand. The categories were built by reading 159 product titles and sorting them by what the garment is; the collections were built by finding the construction details that repeat across categories. Where a page has nothing useful to say about a piece, it says less rather than padding.
Between them, Tanks & Crops and Shirts & Tees hold 78 of the 159 pieces catalogued here — more than half. That is not an accident of sourcing: the square-neck crop and the ribbed tank are the styles the label is known for, and most of the rest of the line is built to sit under or over them. If a size works in one of these, it will usually work across the catalogue, because the same fit block runs through the dresses, the jumpsuits and the sets.
The 17 swim pieces are the most technical part of the line. Shaping panels are knitted into the fabric rather than sewn on top, which is the difference between firm support and a visible ridge under a cover-up. One-pieces, tankinis that separate at the changing room, swim dresses with a built-in short and cover-ups that survive being packed wet all appear here, and 14 pieces across the catalogue carry a stated control panel.
The 15 two- and three-piece sets arrive coordinated in fabric and dye lot, which matters more than it sounds: two garments knitted from the same base in different batches will not photograph as a set after a wash. Most pair a crop or shelf-bra tank with a high-rise legging or biker short, and the halves are cut to work apart. 9 jumpsuits and rompers take the same idea further and remove the second garment entirely.
Only 8 pieces are heavy knitwear — brushed fleece, sherpa, open cardigans, zip jackets. They are cut roomier than everything else so a fitted tank or a set underneath does not bunch at the waist. For a brand whose base layers are deliberately close to the body, that extra room is the point of the category rather than a sizing inconsistency.
These are the published scores on the retailer’s pages, quoted as they stand. No reviews are reproduced or paraphrased here.
Square Neck Sleeveless Double-Layer Tank Tops Basic
4,449 ratings · Tanks & CropsSquare Neck Sleeveless Short Bodysuit Seamless Slim
3,563 ratings · Shirts & TeesBlack Bodysuit Sexy Square Neck Long Sleeve
3,117 ratings · Shirts & TeesSquare Neck Long Sleeve Jumpsuit Casual Wide Leg
3,099 ratings · Jumpsuits & RompersBrowsing here is free and unmetered. When a piece looks right, the button opens the retailer’s own page, where the current price, the colour list and the size availability are the live ones.