The suction base is the feature of children’s tableware we get the most questions about — and the most disappointment. Almost always because of the surface, almost never because of the base.
How a suction base actually works
A suction base doesn’t stick. When you press it onto a smooth surface, you squeeze the air out from underneath it. Outside air pressure then holds the silicone against the table, because there is no pressure below it. What holds it is air and a seal — not any material that grips.
Everything else follows from that: if air can get back under the base, it lets go. Any route the air can take back in — a gap, a crumb, a texture, a tablecloth — means it won’t hold.
Which surfaces it holds on
- Holds reliably: a high chair tray, glass, a lacquered or glass-smooth table, a plastic mat.
- Holds conditionally: open-grained wood, matt surfaces, surfaces with a slight texture.
- Doesn’t hold: a tablecloth, a fabric mat, rough or embossed wood, a wet or greasy table, surfaces with grout lines.
The commonest cause of “the suction base doesn’t hold” that customers describe to us is a tablecloth or a cotton mat under the plate. If that is your table, put a smooth plastic or silicone mat under the plate — it works immediately.
Three steps to fit it properly
- The surface must be dry and clean. A drop of water or a small particle under the rim creates a channel for air.
- Set the plate down and press in the middle, not on the rim. Pressing in the middle drives the air out towards the edges.
- Check with a pull. Pull the plate sideways. If it doesn’t move, it is fitted. Three seconds.
Why it holds less well over time
Silicone tires slightly with time and heat and loses some of its springiness. More often, though, the reason is simpler: a thin layer of grease or detergent builds up on the base and stops it sealing.
- Once a week take the base off and wash it separately with a mild detergent.
- Dry both parts completely before putting it back.
- Don’t wash it in the dishwasher together with the plate — bamboo doesn’t belong in one; the details are in the piece on care.
When it lets go — and why that’s right
The suction base isn’t meant to hold at any cost. Under a strong enough vertical pull it lets go, and that is a safety feature: a child hanging on a firmly fixed plate with all their weight could pull the whole high chair or table over onto themselves.
So the right expectation is this: the suction base prevents sliding, pushing and accidental tipping. It doesn’t prevent a determined toddler from lifting the plate if they really put their mind to it.
It isn’t there to stop a child doing everything. It is there so the meal doesn’t turn into a game with the plate.
When your child lifts the plate anyway
It happens, usually around a year old, when a child discovers it can be done. At that point a stronger suction base doesn’t help — your reaction does: pick it up calmly, no reaction, and a clear end to the meal if it repeats. The whole approach is in the piece on throwing food on the floor.
