New Trip Editorial Department Last Updated: 2026.07.13

A must-read for those with a lot of luggage! How to choose a large-capacity suitcase and checkpoints to avoid regrets

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When choosing a suitcase, many people think:

 

"Bigger is safer."

 

However, when they actually use it, they often regret it, saying things like:

"It's heavy and hard to carry," "It's inconvenient to move around on trains,"

"It takes up too much space at home," or "I exceeded the airline's weight limit."

On the other hand, some people choose a suitcase that is too small and end up having to carry shopping bags by hand on the way back.

 

In other words, a large-capacity suitcase isn't a case of "the bigger, the better." Instead, it's important to choose a size that matches your travel style and the amount of luggage you have.

This article explains how to determine if a large-capacity suitcase is truly necessary and provides clear checkpoints to consider before purchasing.

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Table of Contents

1. What is a large capacity suitcase? How many liters are considered large capacity?

2. Who should choose a large-capacity suitcase?

3. Is Big Capacity Always Best? 4 Things to Check Before Buying

4. If you don't need a large suitcase, consider the "expandable function"

5. Be Aware of the Disadvantages of Large Suitcases

6. New Trip's Recommended Large-Capacity Suitcases

7. Conclusion

8. Frequently Asked Questions (FAQ)

一、大容量スーツケースとは？何Lから大容量と言える？

First, what is the minimum liter capacity that qualifies a suitcase as "large capacity?"

Generally, a suitcase with 80L or more is considered large capacity.

Let's check the table below for capacity, size indications, and suitable uses.

容量 サイズ表記 適した用途
～40L Sサイズ 1〜3泊の短期旅行
50〜70L Mサイズ 3〜5泊の旅行
80〜90L Lサイズ 長期旅行・家族旅行
100L以上 超大容量 複数人分の荷物・留学・引越し

However, it is important to check not only the capacity, but also the main unit size and weight.

Even with the same 80L capacity, a vertical design and a horizontal design will differ in terms of ease of storage and portability.
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二、大容量スーツケースがおすすめなのはこんな人

Large suitcases are not necessary for everyone.

They are especially recommended for travelers with the following styles:

長期旅行・留学

For trips or studies abroad lasting over a week, you'll need a large-capacity suitcase to accommodate the increased amount of clothes and daily necessities. Especially if you can't do laundry at your destination, it's reassuring to have a model with a capacity of 80L or more, as you'll need to bring all your changes of clothes.

家族旅行

When traveling with family, consolidating everyone's luggage into a single suitcase can make traveling much smoother. This is especially true when traveling with small children, as luggage tends to pile up with diapers, changes of clothes, towels, toys, and more, making a large-capacity model very convenient.

For more details on choosing a suitcase for family travel, please refer to our separate article: "How to Choose the Best Suitcase for Family Travel".

お土産をたくさん買う人

If you enjoy buying souvenirs and shopping when you travel, choosing a large-capacity model will give you peace of mind regarding the amount of luggage on your return trip. You can pack only 70-80% of its capacity when you leave, leaving plenty of room for your return.

冬旅行

For winter travel, you'll accumulate bulky clothing such as down jackets, sweaters, and boots. Compared to summer travel, the amount of luggage can nearly double for the same number of nights, so a large-capacity model is necessary.

大容量スーツケースが向いていない人

On the other hand, if your travel style is like the following, S or M size luggage will be more convenient than large capacity:

  • Mainly short trips of 1-3 nights
  • Frequent travel by train or bullet train
  • Minimalist who wants to pack light
  • Prefer to carry on luggage

Choose the appropriate size according to your travel style.
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三、大容量なら何でもいい？購入前に確認したい4つのポイント

When choosing a large-capacity suitcase, you might regret it if you only consider the capacity. Check these four points:

① 重量

As capacity increases, so does the weight of the main unit.

For example, while an S-size unit weighs around 3kg, an L-size can be 4-5kg, and extra-large capacity models can exceed 6kg.

If the unit is heavy before packing, it can be a burden during travel. Especially if you frequently use stairs or public transportation, we recommend choosing the lightest possible model.

② キャスター性能

As capacity increases, so does the weight of your luggage. Therefore, the quality of the casters greatly affects the comfort of movement.

  • Double wheels (8 wheels): Highly stable, allowing heavy luggage to be moved smoothly.
  • Quietness: Prevents disturbing others when traveling early in the morning or late at night.
  • Brand: Models that use reliable brands like HINOMOTO are reassuring.

Some New Trip large-capacity models feature quiet HINOMOTO casters, allowing for comfortable movement even with heavy luggage.

③ 内部収納

Even with the same 80L capacity, usability can vary significantly depending on the internal storage structure.

  • 3:7 structure: One side can be used deeply, making it easy to store large clothes and bulky items.
  • U-shaped compartment: Easy to organize small items.
  • Retaining straps: Prevents luggage from shifting during transit.
  • Depth: If it's shallow, you'll need to stack items, making them harder to retrieve.

Before purchasing, be sure to check the internal photos and descriptions carefully.

④ ボディ素材

Large-capacity suitcases, due to the volume of luggage they carry, are subjected to greater stress on their bodies. Material selection is therefore crucial.

  • Polycarbonate (PC): Lightweight and crack-resistant. Recommended for long trips.
  • ABS + PC: Good balance of cost and durability.
  • Aluminum Frame: Most robust. Offers high security, but adds to the weight.

Choose according to your purpose and budget.
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四、 大容量スーツケースが不要なら「拡張機能」という選択肢

Many people find that it's more convenient to have a suitcase they can use as a 60L capacity normally and expand to 80L only when needed, rather than a single 100L large capacity.

With an expandable suitcase, you can:

  • Travel light on the way there: Use it small when you have less luggage
  • No worries even if souvenirs increase on the way back: Expand capacity with a single zipper
  • Save storage space at home: Store it compactly when not in use
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五、 大容量スーツケースのデメリットも知っておこう

While large suitcases offer many conveniences, they also have disadvantages.

  • Difficult to carry
    The suitcase itself is heavy, and becomes even heavier when packed, making it cumbersome on stairs or when traveling by train.
  • LCC weight restrictions
    Checked baggage for LCCs often has a weight limit of 20kg or less, so overpacking a large suitcase can lead to exceeding the weight limit.
  • Hotel space
    In small rooms, such as those in business hotels, opening a large suitcase can leave no room to move around.
  • Storage at home
    They take up storage space when not in use, which can be inconvenient for those with limited space at home.

It's important not to choose based solely on the idea that "bigger is always better."
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六、New Tripおすすめの大容量スーツケース

家族旅行に最適｜New Trip 0211

For those who want to pack all their family's luggage into one suitcase, the New Trip 0211 is highly recommended.

Features:

  • Large capacity design: Stores all your family's clothes and daily necessities together
  • 3:7 structure: One side is deeper, making it easy to pack large items
  • Stable casters: Moves smoothly even when heavily loaded

Recommended for:

  • Families who want to consolidate luggage into one suitcase for travel
  • Parents who want to manage their children's belongings all in one place
New Trip 0211

1台にまとめたい家族旅行

New Trip 0211 スーツケース

Lサイズ・105L｜ABS+PC

五輪設計 TSAロック 大容量設計 物掛けフック

¥29,980

商品を見る

買い物旅行に便利｜New Trip 0502

For trips with lots of souvenirs or shopping, the New Trip 0502 is highly recommended.

Features:

  • Expandable function: Peace of mind even if your luggage increases on the way back
  • HINOMOTO silent casters: Smooth movement even with heavy luggage
  • PC + aluminum alloy corner pads: High durability

Recommended for those who:

  • Plan to buy many souvenirs
  • Tend to have more luggage on the way back
New Trip 0502

長期旅行・海外渡航におすすめ

New Trip 0502 スーツケース

Lサイズ・100L｜100%PC

HINOMOTO静音キャスター 拡張機能 TSAロック スマホスタンド

¥25,980

商品を見る
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まとめ

When choosing a large-capacity suitcase, it's important to

choose a size that fits your travel style, rather than simply choosing "the biggest model."

Points to check before purchasing:

  • □ Do I really need a large capacity for my travel style?
  • □ Is the main body weight within an acceptable range?
  • □ Is the quality of the casters sufficient?
  • □ Is the internal storage easy to use?
  • □ Can an expansion function be used as a substitute?

At New Trip, we offer a lineup that can be chosen according to your travel style, from large-capacity models ideal for family trips to flexible models with expansion functions.

 

Find "the perfect one for you" and enjoy a comfortable journey.

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よくある質問（FAQ）

Q. 80Lで何泊できますか？

A. 一般的には5〜7泊程度が目安です。ただし、季節や荷物量によって異なり、冬場は衣類がかさばるため短期間でも大容量が必要になる場合があります。

Q. 100Lは機内預けできますか？

A. はい、多くの航空会社で預け入れ可能です。ただし、サイズ制限や重量制限（一般的に23kg以下）には注意しましょう。

Q. Lサイズは女性でも使えますか？

A. 使用できます。本体重量が軽く、静音キャスター付きのモデルを選ぶと女性でも扱いやすくなります。

Q. 家族旅行は1台で足りますか？

A. 家族の人数や旅行日数によって異なります。荷物量や移動のしやすさを考えて、必要に応じて複数台に分けると安心です。

Q. 大容量ほど重くなりますか？

A. 一般的には容量が大きいほど本体重量も増える傾向があります。素材や設計によって異なるため、購入前に重量を確認しましょう。

Q. 大容量スーツケースは壊れやすいですか？

A. 容量が大きいから壊れやすいわけではありません。荷物の重量を支えるキャスターやファスナーの品質を確認することが大切です。

執筆・監修

New Trip編集部
本記事は、スーツケース・旅行用品ブランド「New Trip」の編集部により制作されました。
製品開発やユーザーの声を活かしながら、ユーザーに合ったスーツケースや、旅行・出張をより快適にするアイテムを発信しています。

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