The Tulum Back Knot Bikini – colorblock two-piece bikini with knotted back detail

The Tulum Back Knot Bikini – colorblock back knot bikini set, view 2

The Tulum Back Knot Bikini – colorblock back knot bikini set, view 3

The Tulum Back Knot Bikini – colorblock back knot bikini set, view 4

The Tulum Back Knot Bikini – colorblock back knot bikini set, view 5

The Tulum Back Knot Bikini – colorblock back knot bikini set, view 6

The Tulum Back Knot Bikini

$37.99

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Select Color:

Black

Army Green

Teal

Select Size:

How to use this guide. These are general body measurements in inches. Because we work with multiple manufacturers, fit varies by style — always check the measurement table on the individual product page first. Where a product lists its own measurements, those take priority over this chart.

How to Measure

Bust — measure around the fullest part of your chest, keeping the tape level and parallel to the floor.
Waist — measure around the narrowest part of your natural waist, usually just above the belly button.
Hip — measure around the fullest part of your hips and seat, roughly 8 inches below the waist.
Inseam — measure from the top of the inner thigh down to the ankle.

Keep the tape snug but not tight, and measure over bare skin or thin clothing.

Standard Sizes (S–3XL)

Size	US	Bust	Waist	Hip
XS	0–2	32–33	24–25	34–35
S	4–6	34–35.5	25–26.5	36–37.5
M	8–10	36–37.5	27–28.5	38–39.5
L	12–14	38–40	29–31	40–42
XL	16	41–42.5	31.5–33	43–44.5
2XL	18	43.5–45	33.5–35	45.5–47
3XL	20	46–47.5	35.5–37	48–49.5

Curve + Plus Sizes (0XL–5XL)

Many of our Curve + Plus styles use a separate 0XL–5XL scale. Use this table for those pieces.

Size	US	Bust	Waist	Hip
0XL	12–14	36–38	25–27.5	39–41
1XL	16	38.5–40.5	27.5–30	41–43
2XL	18	41–43	30–32.5	43–45.5
3XL	20	43.5–45.5	32.5–35	46–48
4XL	22	46–48	35–37.5	48.5–50.5
5XL	24	48.5–50.5	37.5–40	51–53

Fit Notes

Between sizes? Size up for woven and non-stretch fabrics; stay true to size for anything with elastane or spandex.
Bodycon and fitted styles run closer to the body. If you prefer a looser fit, size up.
Oversized, loose, and relaxed styles are cut with extra room already. Ordering your usual size is usually right.
Stretch amount is listed on some product pages — that number tells you how far the waistband gives beyond the flat measurement.

Still unsure? Email cs@shopnetscape.com with the style you're looking at and we'll help you pick a size before you order.

How to Measure

Chest — measure around the fullest part of your chest, under the arms, keeping the tape level.
Waist — measure around your natural waistline, where you normally wear your pants.
Hip — measure around the fullest part of your seat.
Inseam — measure from the top of the inner thigh down to the ankle.
Sleeve — measure from the shoulder seam to the wrist.

Keep the tape snug but not tight, and measure over bare skin or a thin shirt.

Tops & Sets (S–3XL)

Size	Chest	Waist	Neck
S	35–37	29–31	14–14.5
M	38–40	32–34	15–15.5
L	41–43	35–37	16–16.5
XL	44–46	38–40	17–17.5
2XL	47–49	41–43	18–18.5
3XL	50–52	44–46	19–19.5

Big & Tall (4XL–8XL)

Several of our sets run into extended sizing. Use this table for those pieces.

Size	Chest	Waist	Hip
4XL	53–55	47–49	53–55
5XL	56–58	50–52	56–58
6XL	59–61	53–55	59–61
7XL	62–64	56–58	62–64
8XL	65–67	59–61	65–67

Pants & Shorts

Size	Waist (in)	Hip
S	29–31	36–38
M	32–34	39–41
L	35–37	42–44
XL	38–40	45–47
2XL	41–43	48–50
3XL	44–46	51–53

Fit Notes

Between sizes? Size up for woven shirts and non-stretch fabrics; stay true to size for knits and anything with spandex or elastane.
Matching sets are sized to the top. If your chest and waist land in different sizes, order to your chest measurement.
Drawstring waists give you several inches of adjustment, so the waist number is a starting point rather than a hard limit.
Relaxed and oversized cuts already include extra room — your usual size is normally right.

Still unsure? Email cs@shopnetscape.com with the style you're looking at and we'll help you pick a size before you order.

Ask A Question

Product Description

The back is the whole point. The Tulum Back Knot Bikini pairs a modern colorblock design with a sleeveless swim top finished by a knotted back detail — clean from the front, memorable from behind.

The colorblock panels sculpt visually, the knot adds interest where most suits give you a plain strap. Black, Army Green, or Teal, stocked S–XL.

Modern colorblock design with visual sculpting
Knotted back detail — the view people remember
Sleeveless top with secure, comfortable coverage
Three colorways, sizes S–XL, fully stocked

Free USA shipping over $50 · 30-day easy returns · Limited run — when your size is gone, it's gone.

Ships from USA (1–2 business day processing)
Delivery in ~3–7 business days after shipping
Free U.S. shipping $50+
30-day easy returns on eligible items

SKU:

In Stock

SHIPPING (US)
RETURNS
EXCHANGES

SHIPPING (US)

Orders ship from Los Angeles, CA. Processing takes 1–2 business days (Mon–Fri). Most U.S. orders arrive 3–7 business days after shipping. Tracking is emailed when your order ships. Free standard shipping on U.S. orders $50+.

RETURNS

Try it on at home. We accept returns within 30 days of delivery on eligible items in original condition. Start your return through our portal for the fastest service.

EXCHANGES

Need a different size? Request an exchange within 30 days. U.S. customers may receive a prepaid label for eligible exchanges.

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