Thyseed Bottles: Glass, PPSU, Silicone and Pack Sizes

Choose the bottle by its stated material, capacity, included teat and pack count. Thyseed offers different bottle families, so an 8oz bottle should not be treated as the same product as every other 8oz listing.

Compare the details that change the order

Listing	Material and capacity	Pack detail
Thyseed Glass Natural, 5oz	Glass; 5oz capacity per bottle	Two bottles in this listing
Thyseed PPSU Natural, 8oz	PPSU; 8oz capacity per bottle	One bottle; check the included teat stage
Thyseed Silicone Natural, 8oz	Silicone; 8oz capacity per bottle	One bottle; check the included teat stage

Material is only one part of the choice

Begin with the named material on the product page. Glass, PPSU and silicone are separate choices rather than interchangeable descriptions. Think about how you will carry, clean and store the bottle, then follow the manufacturer’s care instructions for the exact model.

If a listing says only “Natural 8oz” without identifying its material, do not infer it from another listing’s name. Check the photographs, packaging and full specification, or contact us before buying. A similar shape does not confirm a shared material or part fit.

Capacity and pack count mean different things

The capacity describes an individual bottle. A 5oz two-pack is two 5oz bottles, not one 10oz bottle. Compare the number of bottles you need for your routine and the items included in each set. A bottle body, complete bottle and replacement teat are different purchases.

Use the graduations and preparation instructions supplied with the bottle when measuring feeds. Capacity is not a recommendation for how much your baby should drink.

Check the teat and flow stage

Read the exact included teat description, rather than selecting by bottle size alone. Age labels in product names describe the listed option; they do not guarantee that a flow rate will suit every baby. If you need help with feeding or flow, ask your health visitor or another qualified professional.

For a replacement, match the bottle family as well as the teat specification. The Natural Series extra-slow-flow teat is a separate one-pack listing, so it should not be mistaken for a complete bottle.

A useful checklist for a repeat order

Keep the original bottle name or label handy.
Confirm the material and capacity.
Check the number of bottles and the included teat.
Check whether you are buying a full bottle or an accessory.
Read the cleaning and assembly instructions for that model.

Browse Thyseed bottles and accessories or compare other brands in bottles, teats and warmers.

Ordering from My Thrifty Mom

Check the selected product’s pack contents, model and availability before ordering. Standard UK delivery is free with no minimum spend. See our delivery estimates and return eligibility and hygiene exceptions. If a label or model is unclear, ask us before you buy.

Sources and how this guide was prepared

Prepared by My Thrifty Mom on 4 October 2026 using the current listings and the references below. This is a buying guide, not a claim of independent hands-on testing or medical advice. Product instructions take priority for cleaning, assembly and use.