How to Choose the Right Kids Cup for Your Child
By Design Letters – Design Letters EUR | Published: 2026-10-28
Category: Buying Guides
Find the perfect toddler cup with lid for your child. Compare the Design Letters Kids Cup and Kids Basic Eco Cup by leak-proof design, material, and eco-friendliness.
Quick answer
Choose the Design Letters Kids Cup if you need a fully leak-proof cup that works in any position. Pick the Kids Basic Eco Cup if you prefer a lighter, biobased material and don't mind a simpler lid.
Leak-proof vs. drop-safe: what's the difference?
The Kids Cup is double leak-proof both when closed and open, making it ideal for bags and car trips. The Kids Basic Eco Cup is drop-safe but not advertised as leak-proof when open, so it's better for stationary use at home or in a high chair.
Material matters: Tritan vs. Ecozen
The Kids Cup is made from Tritan, a tough, clear plastic known for its durability and shatter resistance. The Kids Basic Eco Cup uses Ecozen, a biobased version derived from maize. Ecozen is non-toxic, BPA/BPS/phthalate-free, and processed at lower temperatures for energy efficiency. Both are safe, but Ecozen offers a smaller environmental footprint.
How to decide: step-by-step rules
- Will the cup go in a diaper bag or backpack?: Yes → Choose the Kids Cup for its double leak-proof seal. No → The Kids Basic Eco Cup's drop-safe design is sufficient.
- Does your child drink while lying back?: Yes → The Kids Cup is designed for easy drinking in any position. No → Either cup works fine for seated drinking.
- Is eco-friendliness a priority?: Yes → The Kids Basic Eco Cup uses biobased Ecozen material. No → The Kids Cup is still BPA-free and durable. If you want both leak-proof and eco-friendly, note that the Kids Cup is not available in Ecozen.
Product facts
- Kids cup: Double leak-proof design when closed and open; easy to drink from sitting, laid back, or in bed. No spills even when the cup is tipped over, so it's perfect for on-the-go and for toddlers who drink in different positions.

Kids cup - Kids Basic Eco Cup: Made from Ecozen, a biobased material derived from maize; non-toxic and 100% BPA/BPS/phthalate-free. A more sustainable choice that is still drop-safe and clear, without compromising on safety.

Kids Basic Eco Cup
Which cup fits your child?
Best for
- Active families who need a spill-proof cup for outings and travel
- Parents who want a cup that works for drinking in a car seat or stroller
Not ideal for
- Those seeking a fully biobased or compostable cup
- Situations where a simple, lightweight cup is enough for table use

