Welcome to StartupWorld!

SI

Siysiy Coupons – Verified Deals & Offers | October 2026

Save on high waisted bikini set, one piece swimsuit with 19 manually verified Siysiy offers, updated for October 2026. Browse the latest Coupons, working discounts, and exclusive deals, with expired offers removed regularly.

Siysiy offers 4 coupon codes and 15 deals as of October 2026. Today's top offer: Enjoy 10% Off Your First Order Using Our Coupon Code Shop Now!. Codes are verified and updated daily.

👍
30%
OFF
Enjoy 30% Discount On Your Entire Purchase Using Our Coupon Code!
👍
15%
OFF
Get 15% Off Discount On Everything With Using Coupon Code Shop Now!
👍
10%
OFF
Enjoy 10% Off Your First Order Using Our Coupon Code Shop Now!
👍
10%
OFF
"Founders’ Exclusive: 10% Off Your Next Startup Investment"
25%
OFF
Sports Bras Reduced by 25% This Week
15%
OFF
High Neck Bikinis Available with 15% Savings

Discover sophisticated style with 15% savings on our elegant high neck bikinis.

20%
OFF
High Waisted Bikini Sets Now 20% Less

Find your perfect fit with 20% off all high waisted bikini sets. Dive into summer style for less.

10%
OFF
Yoga Shorts Available with 10% Savings

Stay cool and comfortable with 10% savings on our range of yoga shorts.

30%
OFF
Ribbed Bikinis Discounted by 30%
20%
OFF
Push Up Bikini Tops Reduced by 20% This Week
20%
OFF
Sarongs Discounted by 20%
30%
OFF
Long Sleeve Rash Guards Reduced by 30% This Week
10%
OFF
Cheeky Bikini Bottoms Available with 10% Savings

Refresh your swimwear drawer with 10% savings on all cheeky bikini bottoms.

50%
OFF
Cutout Swimsuits Now 50% Less

Make a statement this season with 50% off our trendy cutout swimsuits.

35%
OFF
One Piece Swimsuits Discounted by 35%
40%
OFF
Workout Sets Now 40% Less

Achieve your fitness goals with 40% off our stylish and functional workout sets.

45%
OFF
Beach Cover Ups Now 45% Less

Complete your beach look with 45% off our versatile beach cover ups.

15%
OFF
Yoga Leggings Available with 15% Savings

Elevate your practice with 15% savings on our comfortable and supportive yoga leggings.

25%
OFF
Floral Print Swimwear Discounted by 25%

Customer Reviews

4.5
Average Rating
6
Total Reviews
Cody Reyes
★★★★★
2 months ago

Smooth order, good quality activewear

I ordered a gym jumpsuit and a pair of seamless leggings from Siysiy. The ordering process on the website was straightforward, and I found exactly what I was looking for quickly. Delivery took around 8 days to reach my address in Texas, which was within their estimated timeframe. Both items fit true to size. The jumpsuit has good compression, and the leggings are really comfortable for yoga. I had a question about washing instructions, and their online chat support responded within minutes. No complaints about the product quality or the overall experience. I appreciate the clear descriptions and sizing charts they provide; it really helped me make the right choices.

✓ Reply submitted. Will be published after approval.
Minimum 10 characters0 / 2,000
Ben
★★★★☆
2 months ago

Decent, but could improve

I bought a floral print swimwear set. The print is vibrant, and the fabric feels pretty good for the price. It shipped within a week, which was fine. My only real gripe is that the sizing seemed a little off on the top; it was a bit snug compared to the bottom. Customer service was helpful when I asked about an exchange, though I decided to keep it. Overall, a solid 4 stars, just wish the fit was more consistent.

✓ Reply submitted. Will be published after approval.
Minimum 10 characters0 / 2,000
Tom F.
★★★★★
2 months ago

Love my new workout set!

Oh my gosh, I just received my new activewear romper and I absolutely LOVE it! The material is so soft and it fits perfectly. I was a little worried about ordering online, but it looks even better in person. It arrived pretty fast too, only took about 5 days. I'm already planning my next order, probably a new high neck bikini! You should definitely check them out, you won't regret it!

✓ Reply submitted. Will be published after approval.
Minimum 10 characters0 / 2,000
Derek Patel
★★★★☆
2 months ago

Good value on first purchase

I was looking for a new workout set and saw Siysiy had some good prices. I snagged a mesh workout leggings and athletic crop top combo during a seasonal sale. The total was under fifty bucks, which felt like a steal. Shipping was free because I hit the minimum, which is always a plus. The quality is decent for what I paid, not super high-end but definitely not cheap feeling either. I think I got my money's worth, especially with the discount.

✓ Reply submitted. Will be published after approval.
Minimum 10 characters0 / 2,000
Jared P.
★★★★★
3 months ago

Always reliable for swimwear

Another great order from Siysiy. I got a ribbed bikini set this time, and it fits just as well as the high waisted one I bought last year. Shipping was quick again, arriving in about 6 days. It's why I keep coming back, good quality and consistent sizing.

✓ Reply submitted. Will be published after approval.
Minimum 10 characters0 / 2,000

Siysiy Community Discussion

Share tips, ask questions & help fellow shoppers save more

R
Rachel W.
2 months ago

How does Siysiy quality compare to Shein? I'm always hesitant with these kinds of sites.

S Sophie Vargas 2 months ago
Honestly, Siysiy feels a bit better than Shein for swimwear. The fabric seems thicker and the stitching is usually more solid. Still fast fashion, but a step up.
5
N Neil Kim 2 months ago
I'd say it's comparable, maybe slightly better. You'll find hits and misses with both, but Siysiy's activewear especially has been surprisingly good for the price.
3
7 Responses (2)
S
Steve Torres
1 month ago

Is Siysiy swim stuff true to size or should I size up/down? Worried about ordering a swimsuit online without trying it on.

P Priya Lindqvist 1 month ago
Most of my Siysiy activewear and swim stuff has been pretty true to size, I'd say stick with your usual. If anything, maybe size up if you're between sizes for a bikini top.
1
D Derek Torres 1 month ago
I found the bottoms run a tiny bit small, but the tops were fine. Read the reviews for specific items if you can, they usually help.
1
6 Responses (2)
T
Tara
2 months ago

Hey, thinking of grabbing a new bikini for my trip next month. How long does Siysiy usually take to ship to, say, California?

G Greg 2 months ago
Mine got to LA in about a week and a half, maybe 10 days total. Not super fast but not horrible.
4
J James J. 2 months ago
Yeah, I think it's usually around 7-14 days for US shipping. Depends on what you order sometimes too.
1
4 Responses (2)
N
Neil Ito
2 months ago

Are there any active discount codes floating around for Siysiy? Trying to save a few bucks on a new swimsuit.

A Alex Torres 2 months ago
Check if their first order discount still works! That's usually 10-15% off. Or sign up for their newsletter, they send codes sometimes.
0
O Omar Silva 2 months ago
I think I saw an influencer code recently, maybe on TikTok? Try searching there, they pop up often.
3
4 Responses (2)
W
Wendy
1 month ago

Anyone know if Siysiy is legit? Saw some cute yoga sets but wanna make sure it's not a scam site.

D Derek Romero 1 month ago
Totally legit! I've ordered from them a few times for bikinis and workout gear. Never had an issue.
5
F Faith Z. 1 month ago
Yeah, it's a real store. Not like, super high-end designer stuff, but good for the price and I got my order no problem.
3
2 Responses (2)
N
Neil D.
1 month ago

What's the deal with returns? If something doesn't fit, is it a pain to send back?

D Daisy 1 month ago
Returns were pretty straightforward for me. Just follow their instructions on the site, I think you have like 30 days.
0
M Mark 1 month ago
Nah, it was fine. I returned a top that didn't fit and got my refund in a reasonable amount of time. You usually pay for return shipping though, afaik.
2
1 Responses (2)
B
Beth
2 months ago

Can you stack coupon codes on Siysiy? Got a free shipping code but also have a percentage off one.

T Troy Romero 2 months ago
Nah, pretty sure you can only use one code at a time. Most online stores are like that.
4
S Sophie Nguyen 2 months ago
I tried that once and it didn't work. You gotta pick which one gives you the best deal.
2
1 Responses (2)

Browse Fashion & Apparel Categories

Explore related categories in this topic

This page may contain affiliate links. If you make a purchase through these links, we may earn a small commission at no extra cost to you. This helps us keep our service free and continue bringing you the best deals.

AI