Twin Baby Equipment Guide: What You Actually Need by Stage | UK

By Jennifer James, UK twin mum and author of Outnumbered From Day One, the honest guide to life with twins.

If you've just found out you're having twins and jumped online, congratulations on your timing. The internet will now try to sell you two of everything. Some of that is correct. A lot of it isn't.

This guide breaks down what you actually need, by stage, with honest notes on what's worth buying new, what's fine second hand, and what you can skip entirely. 

 

Before you start buying: the rules for twin equipment

Two things are true at once. You do need more than parents of singletons. And you do not need as much as the baby industry would like you to believe.

The useful question to ask before buying anything is not "will I need this?" but "when will I need this, and will it still be relevant by then?" Equipment lists go out of date. Specific product recommendations change. This is why the full, regularly updated lists live on this website rather than in print.

One more thing worth saying upfront: always buy new for car seats. Every other category has room for manoeuvre. Car seats do not. You don't know a second-hand seat's history, whether it's been in an accident, or whether it's past its expiry date. Buy new, every time.

 

Newborn essentials (0 to 6 months)

The newborn stage is where the list is longest and the decisions feel most overwhelming. Most of it needs to be in place before the babies arrive because you will not have time to think clearly once they're here.

 

The headline items at this stage are a double buggy, two car seats, two cribs, and a baby monitor that shows both babies simultaneously. These are the non-negotiables. Everything else is a supporting cast.

A few things from the infographic worth expanding on:

The double buggy is the biggest decision and the one that generates the most questions in twin parent groups. Side by side is almost always preferable to tandem. You need to measure your front door before you buy anything. The Mountain Buggy Duet is one of the most consistently recommended options in the UK because it's narrow enough for most doors, clips directly onto Maxi-Cosi car seats, and holds its resale value well. The full picture of leaving the house with two babies, including how to manage solo outings, is covered in getting out of the house with twins.

The formula maker is one of those items that sounds like a luxury until you're doing it manually at 3am for the fourth time that night. If you're formula feeding, it earns its place immediately. Test it before the babies arrive and practise making bottles so it's not a learning curve in the middle of the night. How feeding actually works in practice with two babies is covered in the feeding twins guide.

The mini fridge in the bedroom is less obvious but genuinely useful. Pre-made bottles stored next to where you're sleeping removes one kitchen trip per feed. Over weeks of night feeds, that adds up.

The three-tier trolley is the unglamorous item nobody ever talks about and nearly everyone ends up recommending. Next to the sofa: nappies, muslins, wipes, cream, all within arm's reach. Cheap. Highly effective.

 

 

On the safety items: a LifeVac anti-choking device should be bought before weaning begins, not after. Buy the genuine branded version only. An infant first aid kit means a proper infant-specific kit, not a standard household one. And if you haven't booked an infant first aid course, do it now. These are the things that nobody wants to think about and everyone should.

 

6 to 12 months

By six months, two mobile babies change the physical requirements of your home in ways that are difficult to appreciate in advance. This is the stage where babyproofing stops being theoretical.

High chairs are needed from around six months when weaning begins. Two, side by side at the table. The IKEA Antilop is the most recommended for good reason: it's the easiest to clean, the cheapest to replace when it gets broken or disgusting, and it does the job without pretension. The Jolie Mimsy Snacker is worth knowing about if space is genuinely limited as it folds down almost flat and has washable covers - added bonus.

Stair gates should go top and bottom of every staircase. The top gate must be wall-fixed, not pressure-fit. This is not optional. Pressure-fit gates at the top of stairs are a safety risk. For the bottom of the stairs, pressure-fit is fine.

The babyproofing kit  Strap-type cupboard and drawer locks rather than the magnetic kind, because if you're anything like me, you will be operating them one-handed dozens of times a day and will 100% lose every single one of the keys. Corner guards. An oven lock. Heavy furniture fixed to the wall. The TV fixed either to the wall or to the unit it's on/in via straps. Two mobile babies who are learning to pull themselves up will find every hazard faster than you think possible.

 

On bath toys: choose hole-free options. Duck or animal shaped bath toys with holes collect water and grow mould inside. You'll end up replacing them every couple of months. Stacking cups and anything that fills and empties are better choices and last longer. A non-slip bath mat is also a good investment - we found one covered in animals which turned out to be more entertaining for our twins than half the toys we chucked in alongside it.

First shoes only needed when they're walking outdoors consistently. Get both babies measured individually at Clarks or Start-Rite. Twins often have different foot sizes. Always buy primary shoes new.

 

12 to 18 months

The toddler stage brings a new set of physical requirements and a new level of destruction. This is also the stage where second-hand becomes even more sensible for items that are about to take significant punishment.

 

The wagon becomes relevant from around 12 to 14 months when the double buggy starts feeling like a battle. WonderWagon is widely available in the UK but expensive. Other wagon brands are starting to surface here too, including unbranded options from the likes of Amazon and Temu. Radio Flyer is available in it's basic form in the UK but via import (Amazon US) you can get access to the wider range and worth it for some families. We chose a radio flyer from the US and it still serves us well years later. You need two seats with five-point harnesses, storage underneath or at the end, cup holders are a bonus, and a removable roof is a godsend. Second hand is fine. Use your sun-shade and rain cover from your double buggy over the wagon - it's not typically a perfect fit but it does the job.

Next-stage car seats: stay rear-facing until the height or weight limit is reached, which is usually around 15 to 18 months. Your existing Isofix base may be compatible with the next-stage seat, so check before buying new hardware.

Toddler cutlery: both twins will want their own and will have opinions about which ones they're using. Short-handled spoons and forks with wide grips work best at this age.

Indoor climbing toys like a Pikler triangle or climbing cube serve a genuine developmental purpose at this stage, not just as entertainment. Toddlers need proprioceptive input, which is the sensory feedback from muscles and joints that helps them understand where their body is in space. Climbing, jumping, and rolling provides it. Both items have good resale value and second hand is fine. Aldi occasionally sells these throughout the year and there are relatively inexpensive options out there. 

Toddler beds: the transition from cots happens when they can climb out, or when they reach roughly 90cm. Do both at the same time. Add side rails; IKEA options work well and are affordable. Second-hand frames are fine, but always replace the mattress.

Potties: introduce from 15 to 18 months without pressure. Having two means no waiting and no conflict. This is a personal choice, if you want to wait then do so.

 

The new versus second-hand question

The infographics include a column on this for a reason. Buying second hand for twins is not just acceptable, it's sensible given the volume of equipment involved. But there are categories where you should never compromise.

Always buy new: car seats (both stages), mattresses for any sleeping surface, potties, and safety items including LifeVac, stair gates for the top of stairs, and the infant first aid kit.

Second hand fine with care: buggies (check frame, wheels, harness), bouncers, high chairs, baby gyms, climbing toys, wagons, most clothing and footwear except primary shoes.

The general rule is: if something fails and a baby gets hurt, was it worth saving the money? For most equipment categories the answer is yes, provided you check carefully. For the the ones listed above, the answer is no.

 

A note on this list

Baby products date quickly. A buggy that was the best option 18 months ago may have been superseded, discontinued, or repriced. Check around for current recommendations before buying anything significant. MadeForMums is a great resource for product trials and reviews.

If you're pregnant with twins and feeling overwhelmed by how much there is to think about, that's a completely rational response to the situation you're in. Start with the non-negotiables. Add everything else as you go.

For the full chapter on getting ready, including what to sort before the babies arrive and what can wait, pick up a copy of Outnumbered From Day One.

Equipment recommendations date fast, which is why the detailed lists for each stage live on this website rather than in Outnumbered From Day One. The book covers the principles and the experience; the website keeps the kit lists current. A free chapter sample of the book is available if you want to see how it's written.

 

FAQ

The essentials are a double buggy, two car seats (always buy new), two cribs or bedside cribs, a split-screen baby monitor, a white noise machine, two bouncers/sleep nests to put them down in, and sleeping bags. A formula maker, bottle warmer, and mini bedroom fridge are highly recommended if formula feeding.

The Mountain Buggy Duet is my personal choice. It's narrow enough for most UK doors (I never met a door or aisle I couldn't push it down), clips onto Maxi-Cosi car seats, and holds resale value well. Always measure your front door before buying any double buggy. 

Most equipment is fine second hand if checked carefully. Never buy car seats, mattresses, or safety items second hand. Always replace mattresses on any second-hand sleeping surface.

From around six months when weaning begins. Two high chairs side by side at the table from the start.