Together
Strap-on-Me size guide: Small, Medium, Large or XL?
Same bulb for the wearer, four shafts for the receiver. Here's how to pick the Strap-on-Me size you'll both love.
Reviewed by Bedside CSO (Chief Sex Officer) · Prices checked · How we rank
Best for most peopleUpdated
The Strap-on-Me Small is the right first size for most couples: a 5.79 by 1.34 inch shaft on the same 3-inch bulb every size shares. If the receiver already enjoys a toy about 1.5 inches wide, go up to Medium or Large.
- Best first size: Strap-on-Me Silicone Strapless, Small (No. 1) Shop $91.99 →
- Best next size up: Strap-on-Me Silicone Strapless, Large (No. 2) Shop $114.99 →
- Best Medium in stock: Strap-on-Me Vibrating Strapless, Medium Purple (No. 3) Shop $149.99 →
- Biggest size: Strap-on-Me Silicone Strapless, X-Large (No. 4) Shop $126.99 →
- Harness for more control: Sportsheets Breathable Strap On (No. 5) Shop $42 →
The verdict
Start with the Small unless your partner already enjoys a dildo about 1.5 inches wide or more. Every Strap-on-Me size has the same bulb for the wearer, 3 inches long and 1.53 inches wide, so only the shaft changes: from 5.79 by 1.34 inches on the Small to 6.38 by 1.85 inches on the X-Large. The silicone Medium was out of stock at SheVibe when we checked, so the vibrating Medium is the way to get that size right now.
Our No. 1: Strap-on-Me Silicone Strapless — Small
- The bulb you wear is the same on every size. Only the shaft changes.
- Small 1.34 in. wide, Medium 1.49 in., Large 1.65 in., X-Large 1.85 in.
- Size by width, not length. Most couples should start with Small.
Quick picks
Best first sizeNo. 1 ↓
Strap-on-Me Silicone Strapless — Small
Why it's here: 1.34 in. wide.
Best next size upNo. 2 ↓
Strap-on-Me Silicone Strapless — Large
Why it's here: 1.65 in. wide.
Best Medium in stockNo. 3 ↓
Strap-on-Me Vibrating Strapless — Medium Purple
Why it's here: Three motors.
Biggest sizeNo. 4 ↓
Strap-on-Me Silicone Strapless — X-Large
Quick answers
- What is the best Strap-on-Me size?
- The Strap-on-Me Small is the right first size for most couples: a 5.79 by 1.34 inch shaft on the same 3-inch bulb every size shares. If the receiver already enjoys a toy about 1.5 inches wide, go up to Medium or Large.
- Where can I buy the Strap-on-Me Silicone Strapless, Small?
- We link to SheVibe. Every store gets the same size button on the card, and prices are re-checked when we update the guide.
- How do you rank these?
- By what people actually buy and search for, owner reviews, whether it is in stock, and how well it fits this list. Stores pay us a commission on some links, but that never moves a rank.
At a glance
Compare the top 5
- 1
Strap-on-Me Silicone Strapless — SmallBest first size$91.99Too new to rate$91.99 → - 2
Strap-on-Me Silicone Strapless — LargeBest next size up$114.99Too new to rate$114.99 → - 3
Strap-on-Me Vibrating Strapless — Medium PurpleBest Medium in stock$149.99Too new to rate$149.99 → - 4
Strap-on-Me Silicone Strapless — X-LargeBiggest size$126.99Too new to rate$126.99 → - 5
Sportsheets Breathable Strap OnHarness for more control$41.99 to $42Too new to rate$42 →
Side by side
Strap-on-Me sizes side by side
From the Strap-on-Me silicone strapless listings at SheVibe, checked October 21, 2026. The vibrating Medium shares the Medium shaft, with a 2.75 in. bulb.
| Spec | Small | Medium | Large | X-Large |
|---|---|---|---|---|
| Shaft length | 5.79 in. | 5.98 in. | 6.18 in. | 6.38 in. |
| Shaft width | 1.34 in. | 1.49 in. | 1.65 in. | 1.85 in. |
| Bulb (wearer) length | 3 in. | 3 in. | 3 in. | 3 in. |
| Bulb (wearer) width | 1.53 in. | 1.53 in. | 1.53 in. | 1.53 in. |
| At SheVibe Oct 21 | In stock | Out of stock | In stock | In stock |
The ranking
Strap-on-Me sizes, ranked for most couples
Ranked by demand, review quality, availability, and fit. Stars are owner review averages from the store or brand site, where there are enough reviews.
No. 1 · Strap-on-MePhoto at the top ↑
Best first size
Strap-on-Me Silicone Strapless — Small
The size to start with
Ships discreetly from SheVibe
The Small silicone strapless strap-on: a 5.79 by 1.34 inch shaft and the bulb every size shares, joined by a neck you can bend that holds its angle. No motor, fully waterproof.
Pros
- Body-safe silicone
Cons
- Takes practice to keep steady without a harness
- No vibration. The vibrating version comes in Medium and Large
Why it ranks: The best first size for most couples, and the slimmest shaft in the range. Too new for an owner rating, so it ranks on fit and demand.
No. 2 · Strap-on-Me
Best next size up
Strap-on-Me Silicone Strapless — Large
One step up
Ships discreetly from SheVibe
One size up from Small. The shaft grows to 6.18 inches long and 1.65 inches wide, with the same bulb and bendable neck. No motor, fully waterproof.
Pros
- Body-safe silicone
Cons
- Noticeably wider than Small. Try Small first if you're unsure
- A harness helps keep it steady
Why it ranks: The size to move to when Small feels too slim, or when the receiver already loves a fuller toy.
No. 3 · Strap-on-Me
Best Medium in stock
Strap-on-Me Vibrating Strapless — Medium Purple
Medium, with three motors
Ships discreetly from SheVibe
The vibrating strapless strap-on in Medium. A 5.98 by 1.49 inch shaft, a 2.75 by 1.53 inch bulb, and three motors you control separately from a remote, so both of you feel it. About 40 minutes per charge, IPX7.
Pros
- Silicone
- USB rechargeable
Cons
- About 40 minutes per charge
- Heavier than the non-vibrating sizes
Why it ranks: The Medium shaft, 5.98 by 1.49 inches, with three motors you run separately from a remote. The in-stock way to get a Medium while the silicone one is sold out.
No. 4 · Strap-on-Me
Biggest size
Strap-on-Me Silicone Strapless — X-Large
The biggest one
Ships discreetly from SheVibe
The widest Strap-on-Me, with a shaft 6.38 inches long and 1.85 inches wide on the same bulb. No motor, fully waterproof.
Pros
- Body-safe silicone
Cons
- Not a first size
- Width jumps to 1.85 inches. Size against a toy you know
Why it ranks: The biggest size in the range. Buy it when Large already feels easy.
No. 5 · Sportsheets
Harness for more control
Sportsheets Breathable Strap On
Harness for more control
Ships discreetly from SheVibe
The harness for long, warm nights: air moves through it, so it stays comfortable well past the first round.
Pros
- Breathable mesh, padded hips
- Adjusts to 60-inch hips
- Swappable O-rings
Cons
- Dildo not included
- Bullet pocket is empty until you add a bullet
Why it ranks: A breathable O-ring harness you wear over a Strap-on-Me to hold the shaft steady. Under $45, and the easiest way to make any size feel secure.
Notes from Bedside CSO (Chief Sex Officer)
Notes from Bedside CSO (Chief Sex Officer)
A Strap-on-Me is a strapless strap-on: one end, the bulb, sits inside the wearer, and a bendable neck holds the shaft out in front. The good news for sizing is that the bulb is identical on every size. So the wearer's fit never changes, and you only have to choose the shaft for the person receiving.
The sizes step up in small, steady jumps, mostly in width. Here's what each one measures, who it suits, and the four you can buy today plus a harness that steadies any of them, each in stock at the price shown.
Before you buy
Buying guide
Size by width, not length
There's only about half an inch of length between the Small and the X-Large, but the width grows from 1.34 to 1.85 inches. Width is what the receiver feels most. Compare against a dildo or toy you already enjoy, and pick the size closest to that width.
Do you need a harness?
You can wear a Strap-on-Me without one, but it takes some practice and pelvic-floor strength to keep it steady. An O-ring harness over the bulb gives you much more control, especially in your first few sessions.
Read this first
Mistakes to avoid
Wearing it the first time
Use water-based lube on the bulb and ease it in slowly, then bend the neck until the shaft points where you want it. Lube the shaft too. Start with your partner on top so they set the pace, and add a harness if it keeps slipping.
Torn between two?
Head-to-head
FAQ
Common questions
- What size Strap-on-Me should I get?
- Small, for most couples. If the person receiving already loves a toy around 1.5 inches across, Medium or Large will match better.
- Is the bulb the same on every Strap-on-Me size?
- Yes. Every size in the silicone strapless range shares a 3 by 1.53 inch bulb, per the listings.
- How big is the Strap-on-Me X-Large?
- Per the listing, the X-Large is the biggest in the range: its shaft runs 6.38 inches, at 1.85 inches across.
- Can you use a Strap-on-Me without a harness?
- Yes, but it takes practice to keep it steady. Most people get more control by wearing it with an O-ring harness.
- Is the Strap-on-Me waterproof?
- The silicone strapless range is listed as 100% waterproof, and the vibrating version is IPX7.
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