Quick answer
Start with the narrower 0.72-inch-wide probe if you are new to anal play or want a gentle first session. Choose the wider 0.87-inch probe if you already use small anal toys comfortably and want more fullness from the start.
Why the two widths feel different in use
The Peridise 2-pack gives you two insertable widths: 0.87 inches and 0.72 inches. That difference sounds small on paper, but the anal sphincter is sensitive to even minor changes in diameter. The narrower probe reduces pressure at the opening, which makes first insertion and longer wear easier for many people.
The wider probe fills more of the anal canal. That can feel more stimulating if you already enjoy that sensation, but it also asks more of your relaxation and warm-up. Neither size is 'better'—they serve different comfort levels and experience goals.
What the Peridise design does—and doesn't—tell you about sizing
Both probes are made from phthalate-free, FDA-approved plastic with a smooth finish. The material is rigid, so the width you choose directly affects how much stretch you feel. Unlike soft silicone, there is no squish to absorb the difference between the two sizes.
The catalog does not list insertable length for each probe separately, so use width as your main sizing guide. If length is a concern for your body, start with the narrower probe and check comfort before moving to the wider one.
When to size up—and when to stay put
Move to the wider probe only after you can insert the narrower one easily, wear it without discomfort, and feel relaxed during use. If insertion still feels tight or you find yourself clenching, stay with the narrower size and add more warm-up or a thicker water-based lube.
There is no deadline to size up. The 2-pack is designed so you can keep both on hand and switch based on mood, warm-up time, or how much fullness you want that day.
Decision rules for choosing your starting size
- First-time anal play: Choose the 0.72-inch probe. Insert slowly with plenty of water-based lube and stop if you feel sharp pain or resistance. Keep the wider probe stored for later; there is no need to rush.
- Some experience with small anal toys: If you already use a finger or a small plug comfortably, try the 0.87-inch probe first. Warm up with the narrower one for a few minutes if you feel unsure. Use the narrower probe as a warm-up, not a failed attempt.
- You want a longer wear session: Start with the narrower probe. Its smaller width puts less continuous pressure on the sphincter, which many people find easier to wear for longer periods. Switch to the wider probe only after you know how your body responds.
- You feel discomfort with the wider probe: Go back to the narrower size for at least a few sessions. Add more lube and focus on relaxation before trying the wider one again. Discomfort is a signal to size down, not to push through.
Product facts
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Aneros Peridise Unisex Anal Stimulator 2-Pack: Includes two unisex probes with widths of 0.87 in. and 0.72 in., made from phthalate-free FDA-approved plastic. The two widths let you start at a comfortable diameter and size up later without buying a second product.
Aneros Peridise Unisex Anal Stimulator 2-Pack
Who should choose the Peridise 2-pack
Best for
- Anyone new to anal stimulation who wants a narrow starting option and room to progress
- Couples or solo users who want a unisex, hands-free-style anal massager for varied sessions
Not for
- People who prefer soft, flexible silicone toys—this plastic is rigid
- Users who already want a large or heavily textured anal toy