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HJ Classic Navy Pure Cotton Fly-Front Briefs | 3 Pack - Hugh McElvanna Menswear - Underwear
Size Guide

Universal Size Guide

Use our master size charts below to find your perfect fit across our clothing and footwear collections. All measurements are provided as standard industry guidelines.

1. Men's Formal Shirts (Collar Sizing)

Formal dress shirts are measured primarily by the neck circumference.

  • S (Small): Collar 14.5" - 15" (37cm - 38cm) | To Fit Chest 36" - 38"
  • M (Medium): Collar 15.5" - 16" (39cm - 41cm) | To Fit Chest 39" - 41"
  • L (Large): Collar 16.5" - 17" (42cm - 43cm) | To Fit Chest 42" - 44"
  • XL (X-Large): Collar 17.5" - 18" (44cm - 46cm) | To Fit Chest 45" - 47"
  • 2XL (XX-Large): Collar 18.5" - 19" (47cm - 48cm) | To Fit Chest 48" - 50"
  • 3XL (3X-Large): Collar 19.5" - 20" (50cm - 51cm) | To Fit Chest 51" - 53"
  • 4XL (4X-Large): Collar 20.5" - 21" (52cm - 53.5cm) | To Fit Chest 54" - 56"

2. Men's Suit Jackets, Blazers & Waistcoats

Tailored jackets are sized primarily by chest circumference in inches.

  • S (Small / EU 46): To Fit Chest 36" (91.5cm)
  • M (Medium / EU 48): To Fit Chest 38" (96.5cm)
  • L (Large / EU 50): To Fit Chest 40" (101.5cm)
  • XL (X-Large / EU 52): To Fit Chest 42" (106.5cm)
  • 2XL (XX-Large / EU 54): To Fit Chest 44" (111.5cm)
  • 3XL (3X-Large / EU 56): To Fit Chest 46" (117cm)
  • 4XL (4X-Large / EU 58): To Fit Chest 48" (122cm)
  • 5XL (5X-Large / EU 60): To Fit Chest 50" (127cm)
  • 6XL (6X-Large / EU 62): To Fit Chest 52" (132cm)

Jacket Lengths

Most premium tailoring brands offer different jacket lengths based on your height:

  • Short (S): Ideal for heights up to 5'7" (170cm)
  • Regular (R): Ideal for heights from 5'8" to 6'0" (173cm - 183cm)
  • Long (L): Ideal for heights 6'1" and over (185cm+)

2. Men's Pullovers, Knitwear & Casual Shirts

For jumpers, casual shirts, t-shirts, and coats measured by chest size.

  • S (Small): To Fit Chest 36" - 38" (91.5cm - 96.5cm)
  • M (Medium): To Fit Chest 39" - 41" (99cm - 104cm)
  • L (Large): To Fit Chest 42" - 44" (106.5cm - 112cm)
  • XL (X-Large): To Fit Chest 45" - 47" (114.5cm - 119.5cm)
  • 2XL (XX-Large): To Fit Chest 48" - 50" (122cm - 127cm)
  • 3XL (3X-Large): To Fit Chest 51" - 53" (129.5cm - 134.5cm)
  • 4XL (4X-Large): To Fit Chest 54" - 56" (137cm - 142cm)

3. Men's Trousers, Chinos & Jeans

Trouser sizing is determined by your waist circumference and your inside leg length.

Waist Sizing

  • 30" Waist: 76cm (Alpha Size: Small)
  • 32" Waist: 81.5cm (Alpha Size: Medium)
  • 34" Waist: 86.5cm (Alpha Size: Medium - Large)
  • 36" Waist: 91.5cm (Alpha Size: Large)
  • 38" Waist: 96.5cm (Alpha Size: X-Large)
  • 40" Waist: 101.5cm (Alpha Size: XX-Large)
  • 42" Waist: 106.5cm (Alpha Size: 3X-Large)
  • 44" Waist: 111.5cm (Alpha Size: 4X-Large)

Inside Leg Length

  • Short (S): 30" Inside Leg (76cm)
  • Regular (R): 32" Inside Leg (81.5cm)
  • Long (L): 34" Inside Leg (86.5cm)

4. Women's Blouses & Tops

Standard conversions for women's tops and tailored items.

  • UK 8 (XS): To Fit Bust 32" (81cm)
  • UK 10 (S): To Fit Bust 34" (86cm)
  • UK 12 (M): To Fit Bust 36" (91cm)
  • UK 14 (L): To Fit Bust 38" (97cm)
  • UK 16 (XL): To Fit Bust 40" (102cm)
  • UK 18 (2XL): To Fit Bust 42" (107cm)
  • UK 20 (3XL): To Fit Bust 44" (112cm)

5. Women's Skirts & Trousers

Sizing guidelines for waist and hip fits.

  • UK 8: Waist 25" (63.5cm) | Hips 35" (89cm)
  • UK 10: Waist 27" (68.5cm) | Hips 37" (94cm)
  • UK 12: Waist 29" (73.5cm) | Hips 39" (99cm)
  • UK 14: Waist 31" (78.5cm) | Hips 41" (104cm)
  • UK 16: Waist 33" (84cm) | Hips 43" (109cm)
  • UK 18: Waist 36" (91.5cm) | Hips 46" (117cm)
  • UK 20: Waist 39" (99cm) | Hips 49" (124.5cm)

6. Footwear Size Guide

Shoe sizes can vary slightly by brand, but these charts show standard conversions.

Men's Shoes

  • UK 6: EU 39-40 | US 7 | Foot Length approx. 24.5cm
  • UK 7: EU 41 | US 8 | Foot Length approx. 25.4cm
  • UK 8: EU 42 | US 9 | Foot Length approx. 26.3cm
  • UK 9: EU 43 | US 10 | Foot Length approx. 27.2cm
  • UK 10: EU 44-44.5 | US 11 | Foot Length approx. 28.0cm
  • UK 11: EU 45-46 | US 12 | Foot Length approx. 28.8cm
  • UK 12: EU 47 | US 13 | Foot Length approx. 29.6cm

HJ Classic Navy 3 Pack Cotton Fly-Front Briefs

£30.00 £25.00

HJ Classic Navy Pure Cotton Fly-Front Briefs (3-Pack) – upgrade your daily essentials with premium underwear crafted specifically for the gentleman who values traditional design and dependable comfort. Tailored from 100% responsibly sourced pure cotton, this convenient multi-pack delivers a luxuriously soft touch against the skin alongside superior natural breathability.

The classic keyhole fly-front design provides functional, time-tested convenience for everyday wear. Woven from lightweight, airy cotton fibres, the fabric naturally regulates body temperature to keep you feeling cool, fresh, and comfortable whether at work, running weekend errands, or relaxing at home.

Engineered with meticulous attention to detail, these briefs actively eliminate common daily irritations. Featuring ultra-smooth flatlock inner seams and a scratch-free, tagless interior, they reduce friction and chafing across sensitive skin areas. The plush, flexible elastic waistband is designed to sit comfortably and stay anchored in place without rolling or digging into the waist.

Finished in a timeless navy shade, this three-piece underwear set retains its soft handle and snug shape wash after wash. Available in sizes Small up to 3XL, these briefs provide an essential everyday foundation built for lasting durability and reliable comfort.

Size Guide

Size Waist Fit (Inches) Waist Fit (cm)
Small (S) 30" – 32" 76 – 81 cm
Medium (M) 33" – 35" 84 – 89 cm
Large (L) 36" – 38" 91 – 96 cm
Extra Large (XL) 39" – 41" 99 – 104 cm
2XL (XXL) 42" – 44" 107 – 112 cm
3XL (XXXL) 45" – 47" 114 – 119 cm

Why Shop with Hugh McElvanna Menswear?

At Hugh McElvanna Menswear, dedicated customer care is at the heart of everything we do. Our experienced team in Keady is always on hand to offer helpful styling advice and assist with sizing, whether you shop with us in-store or online.

We pride ourselves on fast, dependable UK shipping using Royal Mail's Tracked 24 service, ensuring your order arrives safely and as promptly as possible. With decades of menswear heritage, we focus on delivering a straightforward, attentive shopping experience from start to finish.

Key Product Specifications

  • Official Style Identification: Designated under the HJ underwear collection as Classic Navy Pure Cotton Briefs (3-Pack).
  • 100% Pure Natural Cotton: Responsibly sourced, gentle against sensitive skin, and naturally breathable for lasting freshness.
  • Traditional Keyhole Fly-Front: Classic functional opening designed for everyday convenience and comfort.
  • Anti-Chafe Flatlock Seaming: Smooth inner seams and tag-free construction prevent scratching and irritation.
  • Non-Roll Elastic Waistband: Soft, flexible waistband engineered to stay secure without pinching or marking the skin.
  • Convenient Multi-Pack Value: Three pairs of matching classic navy briefs packaged together for everyday practicality.
  • Inclusive Size Availability: Tailored to fit waist measurements ranging from Small (30") up to 3XL (47").
  • County Armagh Heritage: Supplied by Hugh McElvanna Menswear, proudly outfitting local gentlemen since 1968.

Daily Comfort & Underwear Care Advice

Wash your pure cotton briefs at 40°C with similar colours to preserve the rich navy colour and elasticity of the waistband. For the softest feel and longest fabric life, air dry naturally or tumble dry on a gentle low-heat setting. The breathable pure cotton construction provides ideal thermal regulation under lightweight summer chinos, everyday denim, or heavy formal trousers.