• New Trip Updated: 2026.01.14

Choosing a suitcase for a family of three: Capacity guidelines and two recommended options that won't disappoint

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When traveling with a family of three, you will end up with more luggage than you imagine, including clothes, daily necessities, and children's equipment.

When packing, the question of "Should I pack everything into one big unit or split it into two units?"

It's a choice that many families face.

In this article, we will explain how to choose the best suitcase for a family of three.

We will explain some tips to reduce the burden of travel and make your trip more comfortable.

We will also introduce recommended models that meet the latest needs.

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table of contents

1. How to choose the best suitcase for a family trip

1. Capacity guideline

2. How to choose materials

3. Opening and closing method and internal structure

4. The importance of casters

5. Other Features

6. Number of suitcases

2. Recommended suitcases for family trips

1. "NewTrip 0211" - Overwhelming storage capacity and stable travel

2. "NewTrip 0502" - Pursuing comfort and multi-functionality for travel

3. Tips for packing and storage for a family trip

1. Basics of sorting and organizing luggage

2. How to pack your suitcase efficiently

4. Summary

一、家族旅行に最適なスーツケースの選び方

To make a trip comfortable for a family of three, it's important not to just choose a large one, but to check the "five points" that take into account your means of transportation and ease of use.

■ 1. 容量の目安

For a family of three, the amount of space you need will vary depending on your packing style.

Generally, the recommended amount is 10 to 20 liters per person per night .

When traveling with your family, your luggage will likely swell more than you expected, with extra clothes for your children, diapers, sandals, winter clothes, and more.

  • Short trips of 2-3 nights: Around 80-100L. It is common to have one large bag or two medium-sized bags (approximately 60L).
  • Long-term trips of 4 nights or more: 120L or more. Combining a main L-size bag with a carry-on bag for items you want to access quickly is a good balance between ease of travel and storage capacity.

■ 2. 素材の選び方

The suitcases that hold the family's belongings

It must be robust enough to withstand harsh environments, yet easy to carry.

  • 100% Polycarbonate (PC): Extremely lightweight and resilient, it easily recovers its shape even after being subjected to impact. Models made of 100% PC, such as the 0502, are highly durable and will preserve your family's memories for years to come.
  • ABS+PC Blend: This material used in the 0211 combines the hardness of ABS with the toughness of PC. It is resistant to deformation and offers excellent cost performance, making it ideal for homes with growing children.

■ 3. 開閉方法と内部構造

One thing that is surprisingly often overlooked is the "depth of the contents" when you open the case.

  • Large-capacity, 3:7 Rectangular Design: While traditional 5:5 split compartments require items to be packed evenly on both sides, models like the 0211, which use a 3:7 ratio, have an extra-deep side. This offers the major advantage of being able to store thick items like children's toys, shoe boxes, or bulky winter clothes without losing their shape.

■ 4. キャスターの重要性

It is not uncommon for a suitcase filled with luggage for three people to weigh over 20kg.

The casters that support this weight are the most important part and determine how tired you will be during your trip.

  • Stable 5-wheel design: In addition to the usual 4 wheels, this type has an auxiliary wheel (5th wheel) in the center, so the bottom is less likely to bend even when heavy loads are loaded, and it can be operated with surprisingly little force.
  • Pursuing quietness: When leaving early in the morning or moving through quiet residential areas, the noise of the wheels can be a concern. High-quality quiet casters like those made by HINOMOTO minimize rattle noise, allowing for stress-free movement.

■ 5. その他の機能

Be sure to check out the additional features that will make your family trip dreams come true.

  • Caster stoppers: When traveling by train or bus, it can be difficult to hold a heavy suitcase while holding your child's hand. One-touch locking caster stoppers significantly increase safety.
  • Capacity expansion: As you return home, you'll likely end up with more souvenirs. With the expandable feature, you can expand the gusset by simply opening the zipper, eliminating the need for an extra bag.
  • Hook smartphone stand: This gimmick allows you to prop up your smartphone to show your child a video while you're waiting, or hang a bag you've purchased on the hook, subtly reducing the burden on parents.

■ 6. スーツケースの数と組み合わせ

Whether you combine everything into one car or split it into two cars depends on your travel style.

  • If you are using public transportation (Shinkansen or bus): We recommend consolidating all your belongings into one large stroller (L size). This will free up one hand, making it easier to hold your child's hand and allowing for smoother passage through ticket gates.
  • If you are using a rental car or your own car: Since the items will be loaded into the trunk of the car like a puzzle, it is often more efficient to use the space by splitting them into two appropriately sized medium-sized items.
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二、家族旅行におすすめのスーツケース

Among the many lineups,

We would like to introduce two models of the "New Trip" that are especially recommended for families traveling with three people.

Choose the one that suits your family's style, whether you prioritize storage capacity or comfort when traveling.

■ 1. 圧倒的な収納力と安定移動を実現「NewTrip 0211」

The "0211" model is ideal for families who want to pack all of their belongings into one vehicle and transport them powerfully.

Easily carry thick luggage! "3:7 large capacity square design"

While a typical suitcase splits in half down the middle, the 0211 has a deep, box-like structure with a lid section measuring 3cm and a storage section measuring 7cm. This depth is a great asset for family trips. Thick children's shoes, bulky toys, and thick winter coats can all be stored right to the bottom without losing their shape.

"Five wheels and caster stoppers" that can support the weight of three people

Packing the suitcase with luggage for a family of three can be quite heavy, but the "fifth wheel (training wheel)" located in the center of the bottom prevents the bottom from sagging and supports stable movement. It also comes equipped with caster stoppers (brakes), so you don't have to hold the suitcase down with your feet while holding your child's hand when traveling by train or bus.

Tough body and convenient hook

The bag is made of impact-resistant ABS and PC materials and is treated to make scratches less noticeable. It also has a hidden hook for hanging small items, which is useful on family trips where you tend to bring lots of souvenirs and drinks.

Deep Cube Model
NewTrip 0211

NewTrip 0211【大容量・5輪ブレーキモデル】

3:7の「大容量方形設計」で、かさばる子供用品もすっぽり収納。5輪キャスターとストッパー搭載で、3人分の重い荷物も安定して運べます。頑丈なABS+PC素材と便利なフックが、家族旅行の強い味方に。

  • 厚みのある物も入る3:7の深型構造
  • 安定走行を支える中央5輪目＆ブレーキ機能
  • 4段階調節ラバー＆手荷物用フック搭載
0211の詳細を見る

■ 2. 移動の快適さと多機能を追求「NewTrip 0502」

"0502" is recommended for families who prioritize "quietness" and "convenience" while traveling and want to minimize stress for parents.

HINOMOTO Silent Casters: Incredibly quiet operation

The stroller is equipped with silent casters made by the Japanese manufacturer Hinomoto Lock. Whether you're leaving early in the morning, coming home late at night, or navigating a quiet hotel hallway, the noise is reduced, allowing for smooth movement. Even while carrying a sleeping child, you can move the stroller smoothly without worrying about noise.

"Capacity expansion" feature means you don't have to worry about bringing back souvenirs

It's a common occurrence on family trips: souvenirs pile up on your travels and your bag won't close. The 0502 features an expandable gusset that expands just by opening the zipper. This increases storage capacity, so you can head home light without needing to buy a second bag.

"Smartphone stand" and "zinc alloy corner pad" to make waiting time more comfortable

While waiting at the airport or station, your child won't get bored by watching videos on the built-in smartphone stand. The corners are also padded with zinc alloy to protect the contents of your luggage even during rough handling during travel.

Silent & Expandable
NewTrip 0502

NewTrip 0502【静音HINOMOTO・拡張モデル】

最高級の「HINOMOTO静音キャスター」が、家族の静かな移動を約束。容量拡張機能やお土産用フック、スマホスタンドなど、パパ・ママを助ける機能が満載。高級感のあるPC100%素材と亜鉛合金包角で耐久性も抜群です。

  • 日本メーカー製HINOMOTO静音輪採用
  • 荷物が増えても安心の容量拡張機能
  • スマホスタンド＆衝撃を守る亜鉛合金パット
0502の詳細を見る
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三、家族旅行の荷造り・収納術のコツ

Once you've chosen your suitcase, the next step is to pack it.

Here are two tips for storing luggage for three people efficiently and without getting lost while traveling.

■ 1. 荷物の仕分けと整理の基本：家族間での「シェアパッキング」

If you pack everyone's luggage into one car, it can be difficult to unpack at the hotel if the contents get mixed up.

  • Use different colors for your pouches: Simply use different colors for your travel pouches, such as blue for dad, red for mom, and yellow for the kids, and you'll be able to tell at a glance whose luggage is whose.
  • Place things you need to access quickly in an easily accessible location: For 0211, place wet wipes, rain gear, etc. in the thin storage space on the lid side, and for 0502, place them right after opening the zipper of the main storage compartment.
  • Utilizing the waterproof pocket: The waterproof pocket included with models such as the 0502, or available separately, is extremely useful for separating soiled clothes or wet towels in case of food spills.

■ 2. スーツケースへの効率的な詰め方

This is a tip to make the most of deep 3:7 types such as "0211".

  • Place heavy items at the bottom (on the caster side): Placing heavy items such as spare drinks or shoes on the caster side stabilizes the center of gravity, making it easier to move.
  • Store clothes "upright": In deep storage areas, roll up your clothes and store them upright to prevent the top from collapsing when you try to access items underneath.
  • Utilize dead space with hooks: The "hidden hooks" on the outside of your suitcase allow you to hang drinks you bought while traveling or your child's hat, leaving your hands completely free.
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まとめ：家族のスタイルに合った一台で、最高の思い出作りを

Choosing a suitcase for a family of three is not just about choosing the size.

"How can we free up mom and dad's hands while they're on the move?" "How can we store our ever-increasing luggage in a smart way?"

This is an important decision that will affect the quality of your trip.

  • If you prioritize storage capacity and stability , then the "0211" is the one for you, with its deep 3:7 structure and five casters.
  • If you are looking for comfortable mobility and versatility , choose the "0502" with HINOMOTO silent casters and expansion functions.

Find the perfect partner for your family in 2026 with New Trip.

With proper preparation, even travel time can become a fun and memorable part of your family life.

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