also: ランリック · ランドリュック
noun
lightweight randoseru-style backpack
A trademarked term for a lightweight school backpack that combines the traditional randoseru shape with the convenience of a modern rucksack. Often used by elementary school students as a lighter alternative to a standard randoseru.
来年からはランリュックを使う小学生が増えている。
More elementary school students are using ran-ryukku backpacks from next year.
ランリュックはランドセルより軽くて背負いやすい。
Ran-ryukku backpacks are lighter and easier to carry than traditional randoseru.