How to Choose Your First Anal Dildo: Size, Shape, and Safety
By Le Wand: Best Wand Vibrators and Sex Toys for Solo & Couples | Published: 2026-10-30
Category: Buying Guides
Learn how to pick your first anal dildo with confidence. This guide covers size progression, shape considerations, safety tips, and product recommendations for beginners.
Quick answer
For your first anal dildo, start with a slim, tapered shape in a body-safe material like glass or silicone, and prioritize a flared base for safety. A set that includes a small butt plug and graduated sizes lets you progress at your own pace.
Why size matters most for beginners
The anal canal is sensitive and doesn't self-lubricate, so starting too large can cause discomfort or injury. A good rule of thumb: your first dildo should be no thicker than your index finger (about 1 inch in diameter) and no longer than 5–6 inches to avoid hitting the sigmoid bend. Gradual size increases—often called 'training'—are the safest way to enjoy anal play over time.
Shape and texture trade-offs
Smooth, tapered shapes are beginner-friendly because they allow gentle insertion without sudden stretching. Bulbous or heavily textured dildos can provide targeted pleasure but may be harder to insert and remove. A multi-bulb design, for example, offers a progressive stretch that can feel rewarding once you're comfortable, but it's not ideal for absolute first-timers. Glass dildos offer firm, unyielding pressure and are easy to clean, but they lack the flexibility of silicone, which some users prefer for comfort.
Safety basics beyond material
A flared base is non-negotiable for anal toys—it prevents the dildo from slipping inside and becoming a medical emergency. Body-safe materials like borosilicate glass, medical-grade silicone, or stainless steel are non-porous and easy to sanitize. Avoid jelly, PVC, or TPE, which can harbor bacteria and contain phthalates. Always use a generous amount of lubricant; water-based lubes work with all materials, while silicone lube should be avoided with silicone toys.
Your decision rules for choosing a first anal dildo
- Start with diameter, not length: Choose a dildo with a maximum diameter of 1–1.25 inches. Length can be 5–7 inches, but you don't need to insert the whole shaft. A shorter toy is easier to control. Measure your index finger's width as a reference point.
- Prioritize a flared base or retrieval handle: Any anal toy must have a base wider than the widest part of the shaft. This prevents the toy from migrating inside. Dildos without a flared base are not safe for anal use.
- Choose a smooth, tapered shape: A gently tapered tip allows for comfortable insertion without sudden stretching. Avoid heavily textured or multi-bulb designs until you have some experience. If you want texture later, consider a set with graduated options.
Products that fit a beginner's needs
- 4-piece mr. swirly glass toy set: This 4-piece set includes a beginner-friendly butt plug and glass yoni eggs, designed for progressive anal play and pelvic floor training. The set gives you multiple sizes to gradually increase comfort, and the glass material is easy to clean and compatible with any lubricant.
4-piece mr. swirly glass toy set - Headz 10.5 Inch Multi-Bulb XXL Dildo with Flared Base: The 10.5-inch multi-bulb dildo has spaced bulbs that offer a progressive stretch, plus a flared base for safety. While the length and bulb design are better suited for intermediate users, the flared base and gradual girth increase make it a future goal once you've mastered smaller toys.
Headz 10.5 Inch Multi-Bulb XXL Dildo with Flared Base
Who this guide is for
Best for
- Complete beginners who have never used an anal toy
- Anyone who wants a clear, step-by-step approach to anal play
Not for
- Experienced users looking for advanced or extra-large toys
- People who prefer vibrating anal toys (see our vibrating butt plug guide)
