Glass and Steel Toys: What to Know Before You Buy

By GETAUVE Editorial Team · Published September 8, 2026

Glass and Steel Toys: What to Know Before You Buy

Glass sex toys feel weighty, glide with any lube, and can be chilled or warmed with care. Buying well means checking the glass type before anything else.

Hard, non-porous materials solve most of the problems people eventually hit with soft toys. They do not go tacky, they do not hold odor, they work with every lube on the shelf, and they can be sanitized to a standard that soft materials cannot reach.

They also have two properties worth respecting: they are heavy, and they are hard. This guide covers how to tell good glass from ordinary glass, what to look for in steel, how to handle temperature safely, and how to inspect a piece before each use.

The Short Answer

Buy borosilicate glass or 316 stainless steel, from a brand that names the material and states that the glass is annealed. Both are non-porous, body-compatible, and boilable. Both work with water-based, silicone-based, and oil-based lube.

Skip anything sold simply as glass without a type, and skip steel listed as alloy or metal without a grade. Also skip pieces with surface decoration that looks painted on rather than sealed inside the material.

Glass: Borosilicate vs Soda-Lime

The type of glass determines how the piece handles temperature and impact, and the difference is invisible in a photograph.

• Borosilicate glass contains boron oxide, which gives it a low coefficient of thermal expansion. It resists thermal shock, so moving it from warm water to cool water is far less likely to crack it. It is the material used for laboratory glassware and quality bakeware, and it is the glass you want.
• Soda-lime glass is ordinary container and window glass. It is cheaper and widely used in decorative pieces. It tolerates far less temperature change and chips more easily at a rim or a curve.

Two more terms matter. Annealed means the piece was cooled slowly in a controlled kiln to relieve internal stress. Unannealed glass can look perfect and fail later under a small temperature change. Tempered glass is heat-treated for strength and, when it does break, it crumbles into small blunt pieces instead of shards, which is a meaningful safety advantage.

You can sanity-check a listing without lab equipment. Borosilicate pieces from reputable makers usually run higher in price, are described with specific language, and are sold with a stated breakage or satisfaction policy. A $20 glass piece with no material detail is almost always soda-lime.

Stainless Steel: Grade, Weight, and Finish

Steel is the heaviest material in this category, and that weight is the point. A steel wand weighing 1 to 2 pounds delivers firm, steady pressure without any motor, and it does not flex at all.

• 316 stainless steel is the marine-grade alloy used in body jewelry and surgical instruments. It has strong corrosion resistance, including against salt and chlorinated water.
• 304 stainless steel is common in kitchenware and is also used for toys. It resists corrosion well in normal use but is slightly less resistant than 316.
• Chrome-plated base metal is the one to avoid. Plating can chip and flake, exposing an unknown alloy underneath. A magnet test helps: quality austenitic stainless steel is generally non-magnetic, while plated steel often attracts a magnet strongly.

Finish matters for comfort and for cleaning. A mirror-polished surface should be flawlessly smooth, with no pits, no brush marks you can feel, and no seam ridge. Run a cotton ball gently over the surface; if it snags, the finish was not completed.

If you have a known nickel allergy, ask the brand about the alloy before buying. Stainless steel contains nickel, and while the surface oxide layer limits release, sensitive users sometimes react.

Temperature Play: Safe Ranges and Red Lines

Both materials take to temperature beautifully, which is the main reason people choose them. The rules are simple and worth following exactly.

• Warming. Use warm tap water or a bowl of water no hotter than you would comfortably bathe in, around 100 to 104 degrees Fahrenheit. Test the surface on the inside of your wrist before use, the same way you would test a baby bottle.
• Cooling. Use the refrigerator, or a bowl of cool water with ice in it, for a few minutes. Around 45 to 55 degrees Fahrenheit is plenty.
• Never use a freezer. A frozen surface can stick to warm tissue and cause injury on removal.
• Never use a microwave. Metal cannot go in at all, and glass heats unevenly with hot spots you cannot see or feel in advance.
• Change temperature gradually. Even borosilicate glass prefers a slow transition. Move from warm to cool in two steps rather than plunging a hot piece into ice water.
• Skip temperature play entirely if you have reduced sensation from any cause, if you have used a numbing product, or if you cannot feel temperature clearly on the inside of your wrist. Sensation is your safety check, and without it you can be injured without noticing.

How to Inspect Before Every Use

This takes ten seconds and is the single most important habit with hard materials. Do it under bright light, and run your fingers slowly over the whole surface.

• Look for chips, especially at the tip, the rim, and the base flare.
• Look for hairline cracks, which show up as a thin bright line that catches light at an angle.
• Check for cloudy patches. On glass this can mean surface etching from a cleaner or dishwasher detergent; on steel it can mean corrosion starting.
• Feel for a raised seam or a rough patch that used to be smooth.
• Check that any decorative color sits inside the material rather than on top of it as a coating.

If you find a chip or a crack, retire the piece. There is no safe repair for glass or steel that goes inside the body, and a hairline crack can open further under pressure.

Cleaning and Sanitizing Hard, Non-Porous Materials

These are the only materials you can truly sanitize at home, and the routine is straightforward.

• Wash with warm water and unscented mild dish soap, then rinse well.
• For a deeper clean, place the piece in boiling water for three to five minutes, using tongs to avoid contact with the pot bottom. Let it cool on a clean towel.
• The top rack of a dishwasher is acceptable for glass and steel if you skip the detergent and the heated dry cycle, since detergent can etch glass over time.
• A wipe with 70 percent isopropyl alcohol, followed by air drying, works well for a quick clean between uses.
• If you prefer bleach, use a mild solution of about one tablespoon of unscented household bleach per gallon of water, followed by a thorough rinse with clean water.
• Dry completely with a lint-free cloth before storing, since water spots on steel are easy to mistake for damage later.

Storage and Travel

Hard materials are durable against wear and vulnerable to impact. Store them the way you would store good glassware.

• Keep each piece in its own padded pouch, so glass does not tap against steel in a drawer.
• Store at room temperature in a dry place. Avoid a windowsill, where daily heating and cooling cycles the material.
• Never store a piece in a sink, on a tile counter edge, or anywhere it can be knocked off.
• For travel, use a hard-sided case with padding. A padded pouch inside a suitcase is usually not enough protection against a hard bag drop.

New to this category and deciding between a hard piece and a vibrating one? Our guide to choosing a first vibrator lays out the tradeoffs, and what body-safe means explains why non-porous materials rank highest.

Final Thoughts

Borosilicate glass and 316 stainless steel are the longest-lasting options in the category. They cost more up front, skip the motor and battery entirely, and can be sanitized properly. Ask for the material by name, inspect before every use, and keep temperature changes gentle.

If you want to add one hard piece to a collection, look for a brand that states borosilicate and annealed in the specifications. Our Self Love Ritual collection groups pieces by material so you can compare construction before you choose.

Sources

• U.S. Consumer Product Safety Commission: glass and metal consumer product safety, and injury data
• U.S. Food and Drug Administration: body jewelry metals and nickel sensitivity
• Cleveland Clinic: burn prevention, temperature injury, and skin sensation
• Mayo Clinic: cleaning and disinfecting household items, and bleach solution safety
• Centers for Disease Control and Prevention: sanitizing solutions and safe dilution ratios

Written by the GETAUVE Editorial Team. This article is general education and is not medical advice. Talk with a qualified healthcare professional about your own body, symptoms, or medical questions.