How many GreenDay yarn balls do I need to make a summer top?

For a women’s summer top in size M, you will generally need 4-5 yarn balls of GreenDay (200-250g total). The quantity varies depending on the chosen style: a crop top will require 3-4 yarn balls, while a longer hip-length top will need 5-6. For an openwork tank top with airy stitches, thanks to the yarn’s lightness, 3-4 yarn balls may be enough. We recommend checking the video tutorials attached to the product page for more accurate calculations based on your specific project.

Is GreenDay suitable for projects intended for babies and children?

Yes, GreenDay is perfect for creations made for little ones. Its natural and certified composition (FSC viscose and GRS recycled polyester) makes it a safe and sustainable choice. The softness of viscose feels gentle on delicate skin, while recycled polyester ensures resistance to frequent washing. It is ideal for light spring/summer baby blankets, little dresses, decorative bibs, and hats. Always remember to follow the washing instructions to preserve the integrity of the finished garment over time.

How does GreenDay perform with lace stitches and crochet work?

GreenDay offers excellent performance with lace and openwork stitches. The viscose component ensures excellent stitch definition, making even the most intricate lace and eyelet details stand out clearly. With a crochet hook (recommended size 3-4), the yarn glides smoothly, allowing you to work textured stitches, shells, arches, and picots with great precision. The slightly lustrous surface of the viscose further enhances the beauty of openwork projects, creating light effects that are especially appreciated in shawls, wraps, and summer tops.

What is the difference between FSC viscose and traditional viscose?

The FSC viscose used in GreenDay comes exclusively from certified sustainably managed forests, where every felled tree is replaced according to controlled regeneration plans. Unlike traditional viscose, which may come from unregulated deforestation, FSC viscose guarantees full supply chain traceability, respect for workers’ rights, and protection of biodiversity. In addition, the production process used for GreenDay reduces environmental impact by 40-55% compared with conventional viscose production and dyeing methods.

Is GreenDay colourfast and resistant to washing?

Yes, GreenDay features excellent colourfastness thanks to the solution dyeing technology used during viscose production. The colour is incorporated into the fibre during the extrusion phase rather than being applied afterwards as in traditional methods. This process ensures that pigments are perfectly integrated into the fibre’s molecular structure, resulting in bright, long-lasting colours. By following the correct care instructions (cold water, gentle detergent, no bleach), your projects will retain their colour vibrancy even after many washes.

Can I combine GreenDay with other yarns in mixed projects?

Absolutely yes! GreenDay works beautifully in combined-yarn projects. Its medium structure makes it compatible with other yarns of similar weight (sport/DK weight). It pairs especially well with cotton, linen, hemp, and other natural or sustainable yarns to create interesting textures and colour contrasts. When combining different yarns, make sure they have compatible care instructions and that the weight difference is not too great, so the final drape remains even. GreenDay can be used both as the main yarn and as a contrasting colour in striped or colour-block projects.

How can I be sure that the dye lot number is the same for all the yarn balls?

Tessiland is the only Italian e-commerce store that shows the batch/dye lot number directly on the GreenDay product page. This full transparency allows you to purchase knowing that all the yarn balls ordered come from the same dye lot, avoiding colour variations in your finished project. If you realise during your work that you need additional yarn balls and the displayed batch is sold out, you can contact Tessiland customer service (real people, not bots), who will do their best to find yarn balls from the same batch or suggest the best available alternative.

Does recycled polyester keep the same qualities as virgin polyester?

Yes, the GRS certified recycled polyester used in GreenDay offers identical or even better performance than virgin polyester. The mechanical and chemical recycling process used to transform PET bottles into textile fibre produces a material with the same characteristics in terms of strength, elasticity, and durability. In fact, rPET often shows better dimensional stability and less tendency to pill than lower-quality virgin polyester. GRS certification guarantees that at least 50% of the content genuinely comes from post-consumer recycled materials, with traceability verified by independent third-party bodies.

How breathable is GreenDay for summer garments?

GreenDay offers good breathability thanks to its 50% viscose content, a cellulose fibre that naturally promotes air circulation and moisture absorption. While it does not reach the breathability level of 100% cotton, the presence of recycled polyester helps the garment keep its shape and supports quick drying after washing. To maximise freshness in summer garments, we recommend working with airy, openwork, or mesh stitches that create air spaces between the stitches and improve thermal comfort. GreenDay is ideal for tops, lightweight cardigans, and summer accessories that do not require prolonged continuous contact with the skin during intense physical activity.

Which environmental certifications does GreenDay actually have?

GreenDay has two verifiable international certifications: FSC® certification (Forest Stewardship Council) for the viscose sourced from sustainably managed forests, and GRS certification (Global Recycled Standard) for the recycled polyester made from post-consumer plastic. These certifications are issued by independent third-party bodies that verify supply chain traceability, the certified/recycled material content, and compliance with environmental and social criteria at every production stage. GreenDay does not have Oeko-Tex or GOTS certifications, but the two certifications it does hold still guarantee high standards of environmental sustainability and social responsibility throughout the supply chain.

Can GreenDay be used for seamless circular knitting?

Yes, GreenDay is perfect for circular projects both with circular needles and double-pointed needles. Its smooth glide thanks to the viscose component makes it easy for the yarn to move along circular needles, making continuous knitting pleasant and uninterrupted. It is ideal for top-down seamless tops, tube dresses, circular skirts, and raglan sleeves. The yarn structure ensures stitch consistency even after long working sessions, without creating streaks or visible tension changes. For large-diameter circular projects, GreenDay’s lightness (120m per 50g) makes it comfortable to work with without weighing the project down too much on the needles.

How does buying GreenDay really contribute to environmental protection?

Each 50g GreenDay yarn ball makes a measurable contribution to sustainability: the 50% recycled polyester (25g) is equivalent to around 1-2 plastic bottles saved from landfill or the oceans. FSC viscose guarantees that no tree is felled without a regeneration plan, helping protect forest biodiversity. The innovative production process reduces emissions, wastewater discharge, and water consumption by 40%, and energy consumption by 55% compared with traditional methods. By choosing GreenDay, you send a market signal that encourages manufacturers to invest in cleaner technologies and more sustainable supply chains. In addition, you support Tessiland’s ECO LOGICO project, which reinvests part of its profits into expanding the range of low-impact products, creating a virtuous circle of responsible consumption.