Menstrual Discs Club

Using Menstrual Discs (How-To & Tips) => Insertion Tips for Beginners => Topic started by: emma on September 30, 2025, 08:22:59 am

Title: How to Choose the Right Menstrual Disc Size: Sizing Guide 2025
Post by: emma on September 30, 2025, 08:22:59 am

How to Choose the Right Menstrual Disc Size: Sizing Guide 2025 Choosing the right menstrual disc size is the key to comfort, leak-free performance, and confidence. This comprehensive sizing guide helps you pick the perfect disc based on anatomy, flow, and lifestyle. 📏 Key Factors That Affect Sizing 1) Cervix Height • Low cervix: Choose shallower, softer discs or smaller diameter • Medium cervix: Most standard discs fit well • High cervix: Larger diameter or firmer rim helps placement How to measure: • Insert a clean finger and feel for the cervix (round, firm, like a nose) • Note how deep your finger goes: knuckle 1 = low, 2 = medium, 3 = high 2) Flow Volume • Light to medium: 30–50 ml capacity is enough • Heavy: 50–70 ml capacity recommended • Very heavy: 70–80 ml (or use higher-capacity brands) 3) Pelvic Floor Tone • Strong tone (athletes, heavy lifters): Slightly firmer rim improves seal • Sensitive/soft tone: Softer discs improve comfort 4) Birth & Anatomy History • No vaginal births: Standard sizes often fit best • Postpartum: Consider larger diameter or firmer rim for seal 📊 Sizing Recommendations by Profile

Profile	Recommended Disc	Why
Beginner, medium cervix	Flex Disc (disposable)	Easy insert, universal fit
Eco-first, medium/high cervix	Nixit (reusable)	Soft, one-size, comfy
Heavy flow, high-impact	Cora Disc (reusable)	Firmer rim + 60 ml
Low cervix, sensitive	Shallow, soft disc	Less pressure, easier fit
Unsure, wants removal aid	Lumma Disc (string)	String helps removal

📐 Diameter vs Capacity • Diameter affects how the rim tucks behind the pubic bone • Capacity affects wear time on heavy days • For leaks with correct placement → try larger diameter • For frequent emptying → try higher capacity 🧪 At-Home Fit Test (3-Day Protocol) Day 1 (Light day): 1. Insert at home, walk, sit, squat 2. If you feel the rim → size may be off or placement shallow Day 2 (Moderate): 1. Wear 6–8 hours 2. If leaks without overflow → diameter too small or rim too soft Day 3 (Heavy): 1. Track empty intervals 2. If <6h on heavy days → increase capacity 🧭 Brand Shortlist by Need • Maximum capacity: Cora Disc (~60 ml) • Softest feel: Nixit • Beginner-proof: Flex Disc (disposable) • Easiest removal: Lumma (with string) • Budget / multiple sizes: Lumma (S/M/L) 🧩 Troubleshooting Sizing Issue: Leaks despite correct placement • Size up diameter or choose firmer rim (Cora) Issue: Pressure/discomfort • Size down diameter or switch to softer rim (Nixit) Issue: Hard to reach on removal • Try smaller diameter or disc with string (Lumma) Issue: Frequent overflow on heavy days • Increase capacity (50–70+ ml) ❓ FAQ Q: Do one-size discs really fit all? A: They fit many, but not all. Use the 3-day fit test to confirm. Q: Low cervix with heavy flow — what should I choose? A: Softer, slightly smaller diameter plus higher capacity, or plan more frequent emptying. Q: Active lifestyle and strong pelvic floor — what should I choose? A: A firmer-rim disc (e.g., Cora) to maintain a reliable seal during impact.

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Not sure about your size? Share height/weight, cervix height (low/medium/high), flow intensity, and goals — the community will recommend a precise fit.