Quick answer
For light to moderate flow, period underwear like Boody's Full Briefs or G-String offers a reusable, leak-proof alternative to pads, with absorbency clearly stated in milliliters. Pads may still suit heavy flow or on-the-go changes, but period underwear wins on comfort, fit, and long-term cost.
G-String
How absorbency really compares
Pads are labeled by absorbency (regular, super, overnight), but the actual capacity varies by brand and isn't always in milliliters. Period underwear from Boody states exact absorbency: the Full Briefs hold up to 10ml (about 2 regular tampons or 2 pads), while the G-String holds up to 5ml (about 1 tampon or 1 pad). This transparency lets you match the product to your flow day. For light to moderate days, period underwear provides reliable protection without the bulk of a pad. On heavy days, you might need to change more frequently or combine with a pad, depending on your flow.
Fit and comfort: what to expect
Pads adhere to your underwear and can shift, bunch, or cause irritation. Period underwear is worn like regular underwear and stays in place. The Full Briefs feature a high-rise design, soft wide ribbed waistband, and seamfree construction for a smooth fit under clothes. The G-String offers a low-rise, barely-there feel with a soft ribbed waistband. Both are machine washable and have a single-layered towelling gusset for freshness. If you prefer full coverage, the Full Briefs are ideal; for minimal coverage, the G-String is a better match.
Cost per year: reusable vs. disposable
Pads are inexpensive per pack but add up over time. Period underwear requires a higher upfront investment but can last for years with proper care. For example, Boody's Full Briefs are $18.76 (compared to $28.00), and the G-String is $15.36 (compared to $24.00). If you typically use 5 pads per period, that's about 60 pads per year. At roughly $0.25 per pad, that's $15 annually—but many people use more. With period underwear, buying 3-5 pairs can cover a cycle and last 2+ years, bringing the cost per year down significantly. Plus, you reduce waste.
Trade-offs to consider
- Absorbency: Period underwear states capacity in ml (5ml or 10ml), while pads use vague terms like 'regular' or 'super'. This makes it easier to choose the right protection for your flow. For heavy flow, you may need to change period underwear more often or use a pad as backup.
- Fit and feel: Period underwear stays in place and feels like regular underwear, but some styles (like g-strings) offer minimal coverage. Pads can shift and may feel bulky. Choose full briefs for coverage or g-strings for discretion; pads are adjustable but less secure.
- Cost and waste: Period underwear has a higher upfront cost ($15-$19 per pair) but lasts years, reducing yearly expenses and waste. Pads are cheap per use but generate ongoing cost and trash. If you want to save money and reduce waste, invest in 3-5 pairs of period underwear.
Product facts
- Period & Leak Proof - Full Briefs - Light - Moderate - Black: High-rise design for optimal coverage and comfort. Soft wide ribbed waistband and seamfree construction for added comfort. Machine washable with fast-absorbing leakproof technology. Single-layered towelling gusset ensures freshness and dryness. Designed for light to moderate period days, occasional light bladder leaks, and discharge. Absorbency: Up to 2 regular tampons, up to 2 regular pads, holds 10ml. This brief is a solid choice for moderate flow days when you want full coverage and reliable leak protection without disposable pads.
- Period & Leak Proof - G-String - Light - Black: Low-rise, g-string cut for barely-there feel and minimal coverage. Soft ribbed waistband and seamfree design for ultimate comfort. Machine washable with fast-absorbing leakproof technology. Single-layered towelling gusset protection ensures freshness and dryness. Designed for your lightest period days, occasional leaks, and discharge. Absorbency: Up to 1 tampon, 1 pad, holds 5ml. Ideal for light flow days or as a backup, this style offers minimal coverage and a seamless look under tight clothing.
Which is right for you?
Best for
- Light to moderate flow days
- Those who want reusable, eco-friendly protection
- People who dislike the feel or shifting of pads
- Teens or anyone new to period products who want comfort and simplicity
Not for
- Heavy flow days where frequent changes are needed
- Situations where you can't wash reusable products (e.g., camping without facilities)
- Those who prefer the convenience of disposable pads
