First times
Butt plug size guide: how to choose the right size
Real widths, real lengths, no guessing. Find the plug that feels snug in all the right ways.
Reviewed by Bedside CSO (Chief Sex Officer) · Prices checked · How we rank
The verdict
Start at about 0.8 to 1 inch wide. The b-Vibe Snug Plug 1 (3.4 inches insertable, 0.8 inches wide) is the easiest first plug to love. Once it slides in without a second thought, step up to the Snug Plug 2 at 1.2 inches.
- Width is what you feel. Length barely matters for a plug.
- Move up about a quarter inch at a time, never more.
- A narrow neck and a flared base are what keep a plug comfortably in place.
Quick picks
Best first sizeNo. 1 ↓
b-Vibe Snug Plug 1
Why it's here: 0.8 inches, lightly weighted.
The easiest first size
$45 at SheVibeBest if you're unsureNo. 2 ↓
Mood Naughty 1 Trainer
Why it's here: Three sizes in one box.
Graduated trainer set
$35.99 at SheVibeBest step upNo. 3 ↓
b-Vibe Snug Plug 2
Why it's here: 1.2 inches, heavier.
The natural step up
$48 at SheVibeBest vibrating first plugNo. 4 ↓
b-Vibe Novice Plug
$110 to $121.95First size, plus a buzz
$110 at SheVibe · ships freeBest bigger siliconeNo. 5 ↓
Tantus Ryder
A fuller silicone plug
$32 at SheVibe
At a glance
Compare the top 8
- 1
b-Vibe Snug Plug 1Best first size$45$45 → - 2
Mood Naughty 1 TrainerBest if you're unsure$35.99$35.99 → - 3
b-Vibe Snug Plug 2Best step up$48$48 → - 4
b-Vibe Novice PlugBest vibrating first plug$110 to $121.95$110 → - 5
Tantus RyderBest bigger silicone$32$32 → - 6
njoy Pure PlugBest steel$85$85 → - 7
Pillow Talk Rosy Glass PlugBest glass$33.99$33.99 → - 8
njoy Pure Plug LargeWidest here$95 to $96$96 →
Side by side
Every plug, measured
Measurements from each SheVibe listing, checked October 18, 2026. Width is the widest insertable point; multiply by 3.14 for the circumference.
| Spec | Insertable | Widest |
|---|---|---|
| Mood Naughty 1, small | 3 in | 0.75 in |
| b-Vibe Snug Plug 1 | 3.4 in | 0.8 in |
| Mood Naughty 1, medium | 3.75 in | 1 in |
| b-Vibe Novice Plug | 3.35 in | 1 in |
| b-Vibe Snug Plug 2 | 4.3 in | 1.2 in |
| njoy Pure Plug Medium | 2.5 in | 1.25 in |
| Mood Naughty 1, large | 4.75 in | 1.25 in |
| Pillow Talk Rosy | 2.5 in | 1.3 in |
| Tantus Ryder | 4 in | 1.47 in |
| njoy Pure Plug Large | 2.75 in | 1.5 in |
The ranking
Butt plugs by size, ranked
Ranked by demand, review quality, availability, and fit. Stars show review quality only.
No. 1 · b-Vibe
Best first size
b-Vibe Snug Plug 1
Soft silicone with a weighted core, about 55 grams, on a thin neck and a T-shaped base that sits comfortably between your cheeks.
Pros
- Body-safe silicone
Cons
- Small. You may outgrow it in a month
- Still a plug. Lube. Flared base. Don't skip either
Why it ranks: At 0.8 inches wide and 3.4 inches insertable it's barely wider than a finger, yet the hidden weight gives a gentle, satisfying fullness. The plug most people happily start on.
The easiest first size
Ships discreetly from SheVibe
No. 2 · Doc Johnson
Best if you're unsure
Mood Naughty 1 Trainer
Three soft silicone trainers from Doc Johnson, graduated in width and length, each with its own flared base.
Pros
- Flared bases
Cons
- Soft means less 'there' than a weighted plug
- Keep the flare outside. Always
Why it ranks: 0.75, 1 and 1.25 inches wide, each a step longer than the last. Not sure what size you are? Buy the set and let your body tell you.
Graduated trainer set
Ships discreetly from SheVibe
No. 3 · b-Vibe
Best step up
b-Vibe Snug Plug 2
The middle Snug Plug: weighted silicone, about 114 grams, on the same slim neck and T-base as the rest of the line.
Pros
- Body-safe silicone
Cons
- Weight is the product. If you wanted a motor, that's Ditto+ or Plug-ilicious
- Start at 1 if 2 looks like a dare
Why it ranks: 1.2 inches wide and 4.3 inches insertable, with twice the weight of the Snug Plug 1. Same thin neck, so it stays put while you get on with your night.
The natural step up
Ships discreetly from SheVibe
No. 4 · b-Vibe
Best vibrating first plug
b-Vibe Novice Plug
A small, tapered silicone plug with a motor in the tip and a wireless remote. Splashproof, so the shower is fair game.
Pros
- Body-safe silicone
- Rechargeable motor
Cons
- Beginner size. The motor will not save a bad angle
- If you wanted weight and no buzz, that's Snug 1
Why it ranks: About the size of a finger at 1 inch wide, with six vibration levels and fifteen patterns in the tip. Hand the remote to someone you trust.
First size, plus a buzz
Ships discreetly from SheVibe
No. 5 · Tantus
Best bigger silicone
Tantus Ryder
Velvety platinum silicone from Tantus with a pronounced bulb, a slim neck and a flared base. Boilable and dishwasher safe.
Pros
- Platinum-cure silicone
Cons
- Firmer than Vixen. Plan on that
- Water-based lube
Why it ranks: 1.47 inches at its widest and 4 inches insertable, in firm platinum silicone. The size to try once 1.2 inches feels easy.
A fuller silicone plug
Ships discreetly from SheVibe
No. 6 · njoy
Best steel
njoy Pure Plug
A polished stainless steel plug with a sculpted head angled toward the prostate and a tapered neck that holds it in place.
Pros
- Flared base
Cons
- Pick the size from the millimeter chart, not a vibe
- Hard. Lube. Slow
Why it ranks: Just 2.5 inches insertable but 1.25 inches across a polished steel head, so it feels firmer and fuller than its length suggests. Lovely warmed in water first.
Short, heavy and steel
Ships discreetly from SheVibe
No. 7 · Pillow Talk
Best glass
Pillow Talk Rosy Glass Plug
Borosilicate glass with a rose-shaped base. Chill it or warm it in water for a change of temperature.
Cons
- Cute base is still a flared base. That is the safety, not the flower
- Hard. Lube
Why it ranks: 1.3 inches wide on a short 2.5-inch body, with a rose at the base that's lovely to look at. Smooth glass glides with very little lube.
Pretty, smooth, 1.3 inches
Ships discreetly from SheVibe
No. 8 · njoy
Widest here
njoy Pure Plug Large
The larger Pure Plug, 2.75 inches insertable with the same polished steel and tapered neck.
Pros
- 316 stainless steel
- Flared base
Cons
- If Medium already stays, you may not need this
- Hard. Lube. Slow
Why it ranks: The widest plug on the chart at 1.5 inches across the head. Save it for after the Medium feels easy.
The biggest size here
Ships discreetly from SheVibe
Notes from Bedside CSO (Chief Sex Officer)
Notes from Bedside CSO (Chief Sex Officer)
A plug feels bigger than it looks in a photo, and the number that decides it is width. The widest point is what you stretch around, while the narrow neck below it is where your body relaxes and holds on. Length matters far less than most people expect.
Here are eight body-safe plugs with their real insertable length and widest point, from a 0.75-inch trainer to a 1.5-inch steel plug. Every price is exact, and every plug was in stock when we checked.
Before you buy
Buying guide
Start smaller than you think
Most first plugs that end up in a drawer were simply too wide. Somewhere between three-quarters of an inch and an inch across is the sweet spot for a first plug, and the Snug Plug 1, the Novice and the medium Mood trainer all sit right there.
Then pick a material
Soft silicone gives a little and suits long wear. Steel and glass hold their shape, feel heavier and warm or chill nicely, so a firm 1.25-inch plug can feel fuller than a silicone one of the same width.
Read this first
Mistakes to avoid
Sizing up, slowly
Warm up with a finger or your current plug, use plenty of lube and give your body a few minutes before the next size. A trainer set like the Mood Naughty 1 makes the jump gentle: each step adds a quarter inch of width.
No. 1 · b-Vibe Snug Plug 1
$45
FAQ
Common questions
- What size butt plug should a beginner get?
- About 0.75 to 1 inch at the widest point and 3 to 3.5 inches insertable. The b-Vibe Snug Plug 1 and the small Mood Naughty 1 trainer are made for exactly that.
- How do I convert plug width to circumference?
- Multiply the width by 3.14. A 1-inch plug is about 3.1 inches around, and a 1.5-inch plug is about 4.7 inches.
- Why does a short steel plug feel so big?
- Steel doesn't give at all, and its weight pulls gently as you move. The njoy Pure Plug Medium is only 2.5 inches insertable but feels full and firm.
- How long can I wear a plug?
- Start with 15 to 30 minutes and see how you feel. Body-safe silicone with a narrow neck, like the Snug Plug line, is the most comfortable for longer wear.
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