NIXI Body Susie Black Leakproof Knicker — Medium Absorbency

NIXI Body Susie Black Leakproof Knicker — Medium Absorbency

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Estimated delivery between 22 June - 27 June.

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Meet the award-winning medium period knickers that do it all. The NIXI Body Susie is the brand's bestselling mid-rise style — VPL-free, invisible under gym leggings and loved by runners, athletes and everyday women alike. Holding up to 15ml (2–3 tampons), the Susie is the perfect all-rounder for medium flow days, bladder leaks and active lifestyles. Available from age 9 through to a UK size 20, it's the most inclusive style in the range.

Why You'll Feel Confident in the NIXI Body Susie Knicker

✦ Key Features & Benefits

✧ Award-winning design — NIXI Body's most celebrated style, trusted by women (and girls) across the UK for its reliable, comfortable fit
✧ Medium absorbency — holds up to 15ml (2–3 tampons) for confident protection on medium flow days, or as a reliable backup on heavier days
✧ VPL-free mid-rise cut — sits smoothly under everything from gym leggings to work trousers, with no visible lines and no bulk
✧ Loved by runners & athletes — the Susie's secure, comfortable fit makes it the go-to choice for active women who need protection that moves with them
✧ Comfortable waistband — mid-rise with a non-dig waistband that stays in place all day, whether you're at your desk or on a 10k run
✧ Inclusive sizing — available from age 9–10 through to UK size 20, making the Susie the most size-inclusive style in the NIXI Body range
✧ Reusable & sustainable — washable up to 40°C and designed to last for years, replacing hundreds of disposable period products

How to Wear the Susie Knicker with Confidence

The Susie is the ultimate everyday period knicker — the one you reach for on medium flow days when you want reliable protection without thinking about it. Wear it alone on medium days, or pair with a tampon or menstrual cup on heavier days for extra reassurance. The mid-rise cut and VPL-free design mean it disappears completely under any outfit.

For active women, the Susie is a genuine game-changer. Its secure fit and leakproof gusset mean you can run, cycle, do yoga or hit the gym without a second thought. Many of our customers tell us the Susie is the first period product that's made them feel truly free during exercise.

The Susie is also available in children's and teen sizes (age 9–10 and 11–12), making it a brilliant, gentle introduction to period care for younger girls. Comfortable, easy to use and far less daunting than tampons — a thoughtful gift for any young person starting their period journey.

Build your complete period wardrobe by pairing the Susie with the Gracie Thong for lighter days and the Polly Heavy Knicker for overnight protection. Browse our full period pants & period underwear collection, or explore our wider lingerie & underwear edit.

Sizing, Fit & Care Tips

✦ Sizing

The Susie runs true to size — if you're between sizes, size down. Available from age 9–10 through to UK size 20.

Size Option	UK Size	EU Size	US Size
Age 9–10	Age 9–10	—	—
Age 11–12	Age 11–12	—	—
XXS 4	4	32	0
XS 6	6	34	2
S 8	8	36	4
M 10	10	38	6
L 12	12	40	8
XL 14	14	42	10
2XL 16	16	44	12
3XL 18	18	46	14
4XL 20	20	48	16

✦ Fabric Composition

✧ Body: 75% nylon, 25% elastane
✧ Lining: 95% cotton, 5% elastane
✧ Middle layer: 80% polyester, 20% nylon
✧ Waterproof TPU layer

✦ Care Instructions

✧ Rinse in cold water after wear before washing
✧ Machine wash at 30°C or 40°C — do not use fabric conditioner
✧ Do not tumble dry — air dry only (allow a little extra drying time due to the multi-layer gusset)
✧ With proper care, your Susie knickers will last for years

Frequently Asked Questions

How much do the Susie medium period knickers hold?

The Susie holds up to 15ml — the equivalent of 2–3 tampons. This makes it ideal for medium flow days, everyday discharge, bladder leaks and active days when you need reliable, discreet protection that keeps up with you.

Why is the Susie award-winning?

The Susie has been recognised for its exceptional combination of comfort, performance and inclusivity. Its mid-rise, VPL-free design works for virtually every body and every occasion — from the school run to a 10k race — making it the most versatile and beloved style in the NIXI Body range.

Are the Susie knickers suitable for teens and younger girls?

Yes — the Susie is available in age 9–10 and age 11–12 sizes, making it one of the few period pants designed specifically for younger girls. Soft, comfortable and easy to use, the Susie is a brilliant first period product — far less daunting than tampons and much more comfortable than pads. A wonderful, practical gift for any young person starting their period journey.

What size should I order?

The Susie runs true to size — if you're between sizes, size down for the most comfortable, secure fit. Available from age 9–10 through to UK size 20. Our UK customer service team is always happy to help with sizing — just drop us a message for a warm, honest response.

Ready to Find Your Perfect Everyday Period Knicker?

The NIXI Body Susie is the period knicker that works for everyone — from age 9 to size 20, from the school run to the finish line. Award-winning, VPL-free and genuinely comfortable all day long. Add your size to your basket and discover why the Susie is NIXI Body's most loved style. Shop the full period pants collection →

Standard UK Delivery: £2.99 (3-5 working days)
Free UK Delivery: On orders over £50 (3-5 working days)
Overseas Shipping: Calculated at checkout based on your location and item weight (typically 7-14 working days; customs fees may apply)
Order Processing: Orders are processed within 1-2 working days
Tracking: Tracking provided for all UK and overseas orders

RETURNS

30-Day Return Policy: Return items within 30 days of receipt, unused, unworn, with tags and original packaging, plus proof of purchase.
How to Return: Email customer-support@ohsoluxe.co.uk with order details to start the process.
Damaged/Incorrect Items: Contact us immediately at customer-support@ohsoluxe.co.uk for resolution.
Non-Returnable Items: Perishable goods, underwear, custom/personalized products, opened personal care items (e.g., perfumes), hazardous materials, sale items, or gift cards.
EU 14-Day Cooling-Off: EU customers can return within 14 days for any reason, provided items are unused, unopened, with tags and packaging.
Refunds: Processed within 10 business days to original payment method after approval. Contact us if delayed beyond 15 business days.
Exchanges: Not offered directly; return the item and place a new order.

NEED HELP?

Contact Us: Use our contact form, website chat, or WhatsApp (+44 7421 511880).
Email: Customer enquiries: customer-support@ohsoluxe.co.uk | General enquiries: info@ohsoluxe.co.uk
Response Time: Reply within 48 hours.
Customer Service Hours: Mon-Fri, 9am-8pm UK GMT.