Guides · Newborn kit · Sleeping bags
Should I buy an all-season dual-tog sleeping bag or two separate togs?
What does a dual-tog all-season bag actually switch between?
The usual UK all-season SKU is a bag with a removable lining that changes the tog from 2.5 to 1.0. That matches the two everyday bands on NHS safer sleep: 2.5 for about 16–20°C and 1.0 for about 20–24°C. It does not become a 0.5 when the lining comes out.
Tommee Tippee's All-Season Grobag is the product comparison pages keep naming. Natural Baby Shower listed it at £34.97 (was £49.95) on 10 September 2026, 0–6 months 52–68cm, zip-and-pop lining, brand copy claiming use from 14–27°C. Treat 14–27°C as marketing span; the NHS still lists a separate 0.5 for 24–27°C.
What does the pound-per-tog maths look like on live listings?
Swipe sideways for the full table
| Basket | What you put in the trolley | Live listing (10 Sep 2026) | What you still have to add |
|---|---|---|---|
| One dual-tog only | 1 × All-Season 1.0↔2.5 | Tommee Tippee 0–6m about £34.97 at Natural Baby Shower | A wash spare, and a 0.5 if nights hit 24–27°C |
| Dual-tog plus spare | 2 × All-Season | About £70 if both are full price on that listing | Still a 0.5 for the NHS heatwave band |
| Two cheap singles | 1 × 2.5 + 1 × 1.0 own-brand | Tu singles about £14–£16 each; George 1 tog 2-pack £20 (was £25) | A second 2.5 for the wash if both packs are 1.0, plus 0.5 in a heatwave |
| Historic bargain single | 1 × own-brand 2.5 | PlayPennies once listed a Tu 0–6 month bag at £6 | That £6 is a past deal, not today's shelf price — check the live ticket |
| Two singles + heatwave bag | 2.5 + 1.0 + 0.5 | Three supermarket units, often £7–£16 each depending on promo | Matches the first-year tog list without paying dual-tog RRP |
One dual-tog at £35 is not automatically dearer than two branded 2.5 + 1.0 bags. It is often dearer than two supermarket singles, and it loses the 'one on, one in the wash' trick unless you buy a second dual-tog or a cheap spare in the tog you use most.
How does laundry change the comparison?
The NHS kit number is still two sleeping bags, or sheets and a cellular blanket. A single all-season bag covers two togs and zero wash spares. Leaks at 2am send you back to the blanket option or a second bag.
- One dual-tog + cellular blanket spare — lowest cash outlay if you accept blankets on wash night and the baby already meets the bag's weight.
- One dual-tog + one cheap 2.5 spare — keeps the 16–20°C nights covered when the expensive bag is wet; 1.0 nights wait on the dryer.
- Two supermarket togs + optional 0.5 — more units to store, usually less per unit, and the heatwave bag is a separate SKU either way.
Do not wear the lining and a second bag together to 'make' a 3.5. Lullaby Trust: do not double sleep bags; trapped air adds warmth. NHS: no other bedding on top of a bag.
Which way should I go before I know the room?
- Price two supermarket togs first If 2.5 + 1.0 own-brand is under the dual-tog ticket and you can store two bags, the flexible SKU is optional. Add 0.5 only if the room needs it.
- Buy dual-tog when storage or decision fatigue is the constraint One garment that is 1.0 or 2.5 is useful in a small cupboard or when you do not want to guess the first tog. Budget a spare somehow.
- Do not count dual-tog as a 0.5 or a 3.5 NHS does not list 3.5. Dual-tog is not 0.5. Those remain skip-or-wait extras.
- Read the weight before you pay either way A £35 all-season 0–6 month bag can still start at about 4kg. Pair it with the under-4kg sheet kit if you are buying before birth.
Is there a single best buy?
No. Comparison pages often crown the Tommee Tippee All-Season Grobag as the flexible pick and then still tell you to buy a spare. Own-brand singles undercut it on a quiet week. The maths changes when a 2-pack is £20 and when the dual-tog is £35 versus £50. There is no RRP MayTally can lock in.
In shortIn short: dual-tog buys you 1.0 and 2.5 in one zip, not a full year and not a wash spare. Two cheap singles often win on price; one all-season bag wins on cupboard space. Add 0.5 for 24–27°C either way. Quote today's ticket, not a remembered £6 deal.
Questions parents ask
- Does 'all-season' mean I can skip a summer bag?
- Not if you follow the NHS 0.5 band for 24–27°C. All-season in this comparison means 1.0↔2.5. That leaves the heatwave bag as a separate buy, or the official vest/nappy option on very hot nights.
- Can I use the dual-tog from birth?
- Only if the baby meets that bag's printed weight and the neck hole cannot pass over the head. Age 0–6 months on the hangtag is not the gate. Many bags still start at about 4kg.
- Is the PlayPennies £6 Tu bag the price I should use in the maths?
- No. That was a deal snapshot on PlayPennies. On 10 September 2026 Tu 0–6 month singles were about £14–£16. Use the live shelf price in your trolley.
- Do I still need two bags if I buy dual-tog?
- NHS lists two sleeping bags, or sheets and a cellular blanket. One dual-tog is one bag. Plan a spare — another bag or the blanket option — for wash day.
Sources
Official pages first. If this page and the official page disagree, the official page wins.
- NHS — Baby safer sleep advice (0.5 / 1.0 / 2.5) — checked 10 September 2026
- NHS — What to buy for your newborn baby (2 sleeping bags) — checked 10 September 2026
- The Lullaby Trust — How to dress your baby for sleep — checked 10 September 2026
- Natural Baby Shower — Tommee Tippee sleeping bag multi-tog (£34.97) — checked 10 September 2026
- George at Asda — Baby girls' sleeping bags (2-packs from £20) — checked 10 September 2026
- PlayPennies — Tu 0–6 month sleeping bag £6 (historic snapshot) — checked 10 September 2026
This is information, not a guarantee of any payment, and not medical, legal or product-safety advice for your home. Prices and rules change; figures carry the date they were checked. Recall status comes from official records only — a product we cannot find is not a safety all-clear. Tell us if we got a fact wrong.